19*70 = (20 - 1)*70 = 20*70 - 1*70 = 1400 - 70 = 1330.
Some may suggest
19*70 = (10 + 9)*70 = 10*70 + 9*70 = 700 + 630 = 1330, but that is much more complicated.
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10+9x70
19*70 = (20 - 1)*70 = 20*70 - 1*70 = 1400 - 70 = 1330
Addition, by itself, does not have a distributive property. Multiplication has a distributive property over addition, according to which: a*(b + c) = a*b + a*c
Addition, by itself, does not have a distributive property. Multiplication has a distributive property over addition, according to which: a*(b + c) = a*b + a*c
Distributive property is a(b+c)=ab+ac