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Jun-15-2018

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## PSLE Only

me. Class Date: Problem Solving Solve the word problems. were 80singers in asings, The averag e sale singers O singers in a singing competition. The average score given singer was 58.5 points. The average score of the female singers ds o4 points and the average score of the male singers was 56 points. for each Ho w many male singers participated in the competition?

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## Whole Numbers (Pri-3) / Multiplication and Division Answer written - Oct-15-2017

Oct-15-2017

Ans = 24999 $\frac{3}{4}$34

## High Strangeness

how to solve f(x) x/s-2

## Fractions (Pri-5) / Fractions Comment written on question - 2 weeks ago

2 weeks ago
GUIDE: draw a bar model showing both A & B's age for the 2 cases to solve for U. Then solve for B's current age.

Jul-08-2018
109

## Fractions (Pri-6) / Fractions Comment written on question - Jul-07-2018

Jul-07-2018
GUIDE: draw bar models for boys & girls using same units U, then solve

## Measurement (Pri-6) / Money Comment written on answer - Jun-21-2018

Jun-21-2018
Sorry but may I know y DF=DB? I’m about confusing

2 weeks ago
That's correct!!

## Algebra (Pri-6) / Algebra Answer written - Jan-10-2018

Jan-10-2018

Assuming the given equation equals 20, let's solve for 'm".

3 + 3m -1 + 6m = 20

2 + 9m = 20

9m = 18

m = 18 ÷ 9

m = 2

## Ratio (Pri-5) / Numbers to 10 Comment written on answer - Jan-06-2018

Jan-06-2018
Good one ! Do remember to use arrows such as 1u --> 18....

## Measurement (Pri-4) / Ratio Comment written on answer - 3 days ago

3 days ago
Correct! You can show working by posting a photo too :)

Oct-15-2017

5000 ÷ 50 = 100

Nov-12-2017

3.69

-      1.40

__________

2.29

## Decimals (Pri-4) / Decimals Answer written - Jul-10-2018

Jul-10-2018
$1$

## Geometry (Pri-6) / Angles in Geometric Figures Comment written on question - a week ago

a week ago
GUIDE: note that the 2 isosceles triangles (while they may not be the same size) share similar angles. Figure out which ones. Then look at big triangle ACE to solve

Jul-22-2018

## Whole Numbers (Pri-5) / Whole Numbers Answer written - 2 weeks ago

2 weeks ago
$1499$

2 weeks ago
that's correct

## Measurement (Pri-6) / Volume of Liquids Comment written on question - 3 weeks ago

3 weeks ago
You can also thank another user by clicking [ ... ], then clicking "Thanks" inside there. Fellow users & moderators will be notified, and they can gain points & badges
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## Whole Numbers (Pri-6) / Whole Numbers Answer written - Feb-08-2018

Feb-08-2018

Total combinations lesser then 75 without condition = 75

Combinations with same numbers: 00, 11, 22, 33, 44, 55, 66 ie 7 combinations

So total combinations with condition = 75 - 7 = 68 (ans)

## Whole Numbers (Pri-5) / Whole Numbers Answer written - Feb-09-2018

Feb-09-2018

Difference of tarts between 2 cases = 6 + 12 = 18

Therefore no. of neighbours =  $\frac{18}{11-9}$18119  = 9 (ans)

## Fractions (Pri-6) / Fractions Answer written - Feb-04-2018

Feb-04-2018

Total households = H

Households with 1 car = $\frac{1}{4}$14  H =  $\frac{4}{16}$416  H

Households with 2 cars = $\frac{7}{16}$716  H

Households with 3 cars = $\frac{1}{8}$18  H =  $\frac{2}{16}$216  H

Ans (a):

Fraction of household with no cars = 1 - $\frac{4}{16}$416  -  $\frac{7}{16}$716   -  $\frac{2}{16}$216  =  $\frac{3}{16}$316

Ans (b):

Total cars =  $\frac{4}{16}$416  H (1) +  $\frac{7}{16}$716  H (2) +  $\frac{2}{16}$216  H(3) +  $\frac{3}{16}$316  H(0) = 1680

$\frac{24}{16}$2416  H = 1680

H = 1120

No of households with 0 cars =  $\frac{3}{16}$316  (1120) = 210

## Whole Numbers (Pri-5) / Decimals Comment written on answer - 6 hours ago

6 hours ago
Can you see why it is half?

## Geometry (Pri-6) / Angles in Geometric Figures Comment written on question - a day ago

a day ago
GUIDE: a rhombus contains 2 pairs of isoceles triangles

3 days ago
Correct!

## Measurement (Pri-4) / Division Comment written on answer - 3 days ago

3 days ago
Correct! Will be better if some working steps are shown :)

## Fractions (Pri-5) / Fractions Comment written on question - 3 days ago

3 days ago
GUIDE: "each boy receive 4 sweets more" will refer to 4 sweets more then what each boy first received from the teacher (not to be confused with 4 sweets more then the girls af
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## Fractions (Pri-5) / Fractions Comment written on question - 4 days ago

4 days ago
GUIDE: all decimals are fractions of base 10, 100, 1000... depending on how many decimal places. In your question it is 1 decimal place which means 8 parts out of ten or 8/10.
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6 days ago

## Percentage (Pri-6) / Percentage Comment written on question - a week ago

a week ago
GUIDE: there are 2 sets of percentages here: one for total & the other for remainder. DO NOT confuse the two :)

a week ago

a week ago

## Money (Pri-2) / Money Comment written on question - a week ago

a week ago
GUIDE: "4 cartons" is there to distract and we do not need that info to solve this question.

2 weeks ago

## Data Analysis (Pri-3) / Bar Graphs Answer written - 2 weeks ago

2 weeks ago
$400$

## Fractions (Pri-3) / Fractions Comment written on question - 2 weeks ago

2 weeks ago
GUIDE: The larger the denominator, the smaller the fraction (if the numerator is the same)

## Whole Numbers (Pri-1) / Money Comment written on answer - 2 weeks ago

2 weeks ago
Hi Ullas, that's correct. It will be even better if you can show your working :)

2 weeks ago
That's correct!

2 weeks ago

2 weeks ago

## Measurement (Pri-1) / Time Comment written on answer - 2 weeks ago

2 weeks ago
Hi Aakifah, that's correct!!

2 weeks ago

## Measurement (Pri-1) / Length Comment written on answer - 2 weeks ago

2 weeks ago
You have correctly put a time to all the 4 clock faces. But which one is actually showing half past 6?

## Fractions (Pri-6) / Fractions Comment written on question - 3 weeks ago

3 weeks ago
GUIDE: Firstly determine how many 1/4 m parts he can cut from the 11/12 m string. Then solve.

## Whole Numbers (Pri-5) / Whole Numbers Comment written on question - 4 weeks ago

4 weeks ago
My bad, I assumed Prema was a boy :) Question is clear now. Answer inside.

## Data Rep & Interpretation (Pri-1) / Picture Graphs Comment written on question - 4 weeks ago

4 weeks ago
Hi Sryl, but this is neither P1 math nor Picture Graph :) But you can solve this by forming quadratic equations. Clue: 6 = 2 x 3 & 5 = 2 + 3. Answer & working inside.

## Measurement (Pri-1) / Length Comment written on question - 4 weeks ago

4 weeks ago
Hi Rui Qi, I see you are exploring the app... that's good! You can also take a photo of the question on mobile (go onto Mathemate's mobile site).

## Measurement (Pri-6) / Circles Comment written on question - 4 weeks ago

4 weeks ago
GUIDE: Perimeter = length of semi circle + diameter

4 weeks ago
Good try!!

Jul-22-2018

Jul-19-2018
Thanks

## Decimals (Pri-5) / Decimals Comment written on question - Jul-16-2018

Jul-16-2018
GUIDE: draw bar model (optional) and write equation for after pouring same amount of water (W) to solve. See working inside :)

## Measurement (Pri-4) / Angles in Geometric Figures Comment written on answer - Jul-15-2018

Jul-15-2018
Close, see answer below.

## Whole Numbers (Pri-4) / Time Comment written on answer - Jul-18-2018

Jul-18-2018
You are right Angelina, total computer time is 150 mins (2.5 hrs) regardless of how many computers was rented!

Jul-15-2018
Correct:)

Jul-15-2018
Correct:)

## Algebra (Pri-6) / Algebra Comment written on question - Jul-14-2018

Jul-14-2018
Hi Nicole, see answer inside!

## Ratio (Pri-6) / Ratio Comment written on question - Jul-09-2018

Jul-09-2018
GUIDE: Express ratio of S, M & G at first and at the end. Use brother’s quantity and end ratio to derive at stamps per part ratio.

## Ratio (Pri-6) / Ratio Comment written on question - Jul-09-2018

Jul-09-2018
GUIDE: Draw a model based on the first condition. Draw a model based on the second condition.

## Whole Numbers (Pri-6) / Whole Numbers Comment written on question - Jul-09-2018

Jul-09-2018
GUIDE: Draw a bar to represent 12 balloons, then minus $10. Draw a bar to represent 7 balloons, then add$14. Both bars represent the amount of money Ben had.

## Measurement (Pri-5) / Measurements Answer written - Jul-06-2018

Jul-06-2018
$\mathrm{correct}$

## Whole Numbers (Pri-3) / Multiplication and Division Answer written - Jul-06-2018

Jul-06-2018
$85$

Jul-06-2018

Jul-01-2018

Jun-30-2018

Jun-27-2018

## Whole Numbers (Pri-1) / Numbers to 10 Comment written on question - Jun-26-2018

Jun-26-2018
Hi Jennifer, good one!! There's no better way to learn than to ask :)

## Whole Numbers (Pri-3) / Addition and Subtraction Comment written on question - Jun-26-2018

Jun-26-2018
GUIDE: Assume either all MC or all Cars and work backwords. See working inside.

Jun-26-2018

## Whole Numbers (Pri-5) / Whole Numbers Comment written on question - Jun-26-2018

Jun-26-2018
GUIDE: establish final quantities in all boxes, then find net gain or loss for any given box. See working inside.

Jun-25-2018
Well done:)

## Speed (Pri-6) / Multiplication Comment written on answer - Jun-25-2018

Jun-25-2018
Speed = Dist / Time | Dist = Speed x Time

## Fractions (Pri-6) / Speed Comment written on answer - Jun-24-2018

Jun-24-2018
This is the preferred method for PSLE, use this :)

## Fractions (Pri-6) / Fractions Comment written on question - Jun-24-2018

Jun-24-2018
GUIDE: change total money into 24 parts (24U) and work from there

## Fractions (Pri-5) / Fractions Comment written on question - Jun-24-2018

Jun-24-2018
GUIDE: If you spend 1/2 of your savings on books, and 1/2 of that on storybooks, you would have spent (1/2)(1/2) = 1/4. You can draw a bar model to see the answer. The same a
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Jun-23-2018

## Whole Numbers (Pri-6) / Whole Numbers Comment written on question - Jun-23-2018

Jun-23-2018
Hi Trinh, can you upload your answer again, I can't see it :)

Jun-23-2018
Correct!

## Decimals (Pri-6) / Decimals Comment written on question - Jun-22-2018

Jun-22-2018
GUIDE: break 150 donuts into (sets of 4) and its remainder

## Fractions (Pri-6) / Fractions Comment written on question - Jun-22-2018

Jun-22-2018
GUIDE: convert all units to secs

## Speed (Pri-6) / Whole Numbers Comment written on answer - Jun-22-2018

Jun-22-2018
Hi Riana, you're correct! And your answer has been verified (See Green icon with a Tick on the right)

## Measurement (Pri-4) / Speed Comment written on answer - Jun-22-2018

Jun-22-2018
Good try! Correct.

Jun-11-2018

Jun-11-2018

May-29-2018

May-24-2018

May-08-2018

Apr-25-2018

Mar-13-2018

3×2.50 =7.50

9÷2= 4.50

8+7.50+4.50= 20

50-20 =30

## Whole Numbers (Pri-2) / Operations Answer written - Mar-03-2018

Mar-03-2018

432-86=346

Xian An has 346 marbles

346 + 432 =778

They have 778 marbles altogether

## Whole Numbers (Pri-6) / Whole Numbers Answer written - Feb-25-2018

Feb-25-2018

3U = 42 - 4(3) = 30

1U = 10

Answer 10 kites on day1

Feb-21-2018

78×3=234

80×4=320

320-234=86

Feb-20-2018

×6 = 18

Feb-20-2018

325- 246 = 79

Feb-20-2018

24÷4 = 6

## Whole Numbers (Pri-4) / Whole Numbers Answer written - Feb-20-2018

Feb-20-2018

20×100= 2000

2000-589 = 1411

Rounding off to nearest 10 gives 1410

Feb-12-2018

Nov-11-2017

13

Jul-08-2018
8+2=10

Nov-11-2017

Hundreds. 700

## Fractions (Pri-3) / Fractions Answer written - Oct-16-2017

Oct-16-2017

Zero because did not give how much jack and sis eat

Oct-16-2017

Line TU !!

Oct-16-2017

CM!

## Whole Numbers (Pri-3) / Multiplication Answer written - Oct-15-2017

Oct-15-2017

All         |_____________________| 419 toys

Jayden  |__| 50 toys

Jame     |____| 1U toys

Eheh     |____|____| 2U toys

Jayden + Jame + Eheh = 419

50 + 1U + 2U = 419

3U = 369

U = 369 ÷ 3 = 123

Ans: So Jame have 123 toys

## Whole Numbers (Pri-1) / Numbers to 10 Comment written on question - 2 weeks ago

2 weeks ago
Hi John :) It's easier to load an image of a question when asking.

## Whole Numbers (Pri-1) / Numbers to 20 Comment written on question - 2 weeks ago

2 weeks ago
Hi Kyeran :) can you re-phrase your question?

## Fractions (Pri-6) / Fractions Comment written on question - 3 weeks ago

3 weeks ago
Hi Evelyn, there's an error in your pic. Do re-post, thanks!

## Algebra (Pri-6) / Algebra Comment written on question - 3 weeks ago

3 weeks ago
Hi Evelyn, there's an error in your pic. Do re-post, thanks!

Jul-20-2018

## Whole Numbers (Pri-1) / Addition and Subtraction within 100 Comment written on question - Jul-17-2018

Jul-17-2018
Hello Marcus, what's the question? In addition to typing out a question, you can also upload a photo from your PC. If using mobile or tablet, just take a photo!

## Whole Numbers (Pri-1) / Subtraction within 10 Comment written on question - Jul-09-2018

Jul-09-2018
Hi Niyathi, good try:) A better place to post your answer will be by clicking the [Answer] button above, and posting it there. You will also see other user's answers.

## Whole Numbers (Pri-1) / Numbers to 10 Comment written on question - Jul-08-2018

Jul-08-2018
2 fewer pens than books

## Decimals (Pri-5) / Decimals Comment written on question - Jun-27-2018

Jun-27-2018
Hi Qing Ru, looks like a duplicate question. See below solution.

## Fun (Pri-1) / Puzzles and Brain teasers Comment written on question - Apr-16-2018

Apr-16-2018
Wow! I did not knw that.

## Whole Numbers (Pri-3) / Multiplication Comment written on question - Nov-23-2017

Nov-23-2017
This is nice video. Everyone should watch it.

Nov-23-2017
Test data

Nov-09-2017
nice question