Question

a nunber is multiplied by 2. then that product is multiplied by 5. write to explain how you know what digit is in the ones place the final product

Answer 1

any number multiplied by 2 will give u an even number.
2 x 3 = 6
2 x 4 = 8
2 x 5 = 10

and any even number multiplied by 5 will end in 0
5 x 2 = 10
5 x 4 = 20
5 x 6 = 30

so the number in the ones place will be 0