1. 100×……=100 2. (10×2)+(20×2)=

1. 100 x 1 = 100
Karena sifat bilangan
a x 1 = a
dengan a bilangan bulat
2. (10 x 2) + (20 x 2)
= 2 x (10 + 20)
= 2 x 30
= 60

1. 100x ? = 100
? =100 :100
? = 1
2. (10×2) +(20×2) =…
20 + 40 = 60
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