Toán Lớp 4: Tính nhanh 20435 x 56 + 43 x 20435 + 20435
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Toán Lớp 4: Tính nhanh 20435 x 56 + 43 x 20435 + 20435
Comments ( 2 )
20435 × 56 + 43 × 20435 + 20435
=20435times(56+43+1)
=20435times100
=2043500
20435 x 56 + 43 x 20435 + 20435
= 20435 x ( 56 + 43 ) + 20435
= 20435 x 99 + 20435
= 20435 x 99 + 20435 x 1
= 20435 x ( 99 + 1 )
= 20435 x 100
= 2043500
#Huy