Question

Using suitable properties, find the value of following:

Simplify:

a) $126\times 55+126\times 45$

b) $89\times 48$

c) $49\times 12$
[3 MARKS]

Answer 1

Each option: 1 Mark

By using distributive property we can simplify the problem

a)$126(55+45)=126\times 100=12600$.

b) $(90-1)\times (50-2)$
$=4500-180-50+2=4272.$

c) $49\times 12=(50-1)\times (10+2)$
$=500+100-10-2=588$