Answer:
A) (5×30)×(9×70)
=150×630
=945,000
B)(7×50)÷(2×20)
=350÷40
=8.75
Step-by-step explanation:
You have to know that like example:10 and the small 3 like question a.. It means you have to times.. so 10 times 3..i hope you understand cause I'm still in secondary
