Question

Lukas earned $28 for mowing lawns. He got $7 for each lawn he mowed.How many lawns did Lukas mow?

Answer 1

You solve this a couple of ways.

One way would be to subtract $7 from $28 as many times as necessary to get to zero. Then add up the number of subtractions you made.

28
-7 One lawn
____
21
-7 Two lawns
____
14
-7 Three lawns
___
7
-7 Four lawns.
___
0

So he mowed 4 lawns.

Another way, would be recognize to repeated subtraction of the same number is just division. So 28 divided by 7 = 4 lawns.