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Whole Numbers (Pri-5)

/ Whole Numbers Lianhua Primary School / Homework (2018)
Study the pattern carefully. 2 rle Pattern 1 Pattern 2 Pattern 3 Pattern 4 Sar are there in Pattern 6? (a) How many b) How many are there in total in Pattern 30? and (c) Which pattern has 1111 O
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October 5, 2018
 
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Refer to diagram:P6 has 25 squares  (ans, a)---P30 = ( # - 1 )2   squares= ( 30 - 1 )2= 29 × 29= 841 squares  (ans, b)---P30 = ( 2# - 1 )   semicircles= ( 2 × 30 -1 )= 59 semicircles  (ans, b)---( 2# - 1 )  = 1111 semicircles # = ( 1111 + 1 ) ÷ 2 = 556 semicircles  (ans, c)
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October 6, 2018
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