Question

Martin had 7 pounds of grapes left, and he gave away 2

5
of them. Explain how to use compatible numbers to estimate the amount of grapes he gave away.
#Nova

Answer 1

Answer: 2/5 is closer 1/2. and it is easy to find half of 7 mentally. Half of 7 is 3.5, so Martin gave away about 3.5 pounds away.