who answer my all questions i mark her brainlist
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Answer:
a)4*3
b)7*4
c)z*x+z*y
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Activity 1
a. 15×3
b. 7×4
c. xz,yz
d.100×6,3×200
e.xv,yu
Activity 2
37×43=(30+7)(40+3)
=30×40+30×3+7×40+7×3
=1200+90+280+27
=1597
Activity 3
a.(12-2)5
=(12×5)+(-2×5)
=60-10
=50
b.(6-4)7
=(6×7)+(-4×7)
=42-28
=14
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