Which describes a situation when an estimation is appropriate?
A.
Margo wants to buy a sweater for $15.98 and a pair of socks for $1.98. She has $20. She wants to know if she has enough money to buy both.
B.
Margo buys a sweater for $15.98 and a pair of socks for $1.98. She gives the cashier $20. The cashier wants to know how much change to give Margo.

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will give medal

how much change is usually a precise value

You can estimate if you have enough quickly by rounding those costs to whole values

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