Inverse Operations
Write a related fact that uses the inverse operation.
7 x 5 =
35 divided by 5 = 7
OR
35 divided by 7 = 5
What's the missing number?
49 divided by 7 = ___
49 divided by 7 = 7
Alex went to the arcade and played a skeeball game. He won 6 games and earned 8 tickets for each game. How many tickets did he win altogether?
6 x 8 = 48 tickets
12 divided by 2 = ?
12 divided by 2 = 6
Write the related facts using these 3 numbers: 6, 3, 18.
6 x 3 = 18
3 x 6 = 18
18 divided by 3 = 6
18 divided by 6 = 3
Write a related fact that uses the inverse operation.
8 x 5 = ?
40 divided by 8 = 5
40 divided by 5 = 8
35 divided by 7 equals ?
35 divided by 7 equals 5
If a gorilla eat 10 pounds of food each day, how many pounds of food does a gorilla eat in one week?
10 x 7 = 70 lbs of food
42 divided 6 =
42 divided by 6 = 7
Write the related facts using these 3 numbers: 7, 8, 56
7 x 8 = 56
8 x 7 = 56
56 divided by 7 = 8
56 divided by 8 = 7
Write a related fact that uses the inverse operation.
81 divided by 9 = ?
9 x 9 = 81
____ x 9 = 72
8 x 9 = 72
At the Philadelphia Zoo, there are 12 cages in the reptile exhibit. If there are 2 reptiles in each cage, how many reptiles are there in all?
2 x 12 = 24 reptiles
9 x 7 = ?
9 x 7 = 63
Write the related facts using these 2 numbers as factors: 3, 9, __
3 x 9 = 27
9 x 3 = 27
27 divided by 3 = 9
27 divided by 9 = 7
Write a related fact that uses the inverse operation.
132 divided by 12 = ?
12 x 11 = 132
OR
11 x 12 = 132
28 divided by 7 equals ____
____ x 7 = 28
28 divided by 7 equals 4
4 x 7 = 28
DAILY DOUBLE!!
Part 1: 400
Moira buys 2 liter bottles of juice. If she buys 8 bottles, how many liters does she have in all?
Part 2: EXTRA 400
If Moira needs 20 liters for a party, does she have enough? What's the difference between how many she buys and how many she needs?
Part 1: 2 x 8 = 16 liters
Part 2: 20 - 16 = 4 liters
No, she doesn't have enough. She needs 4 more liters.
12 x 12 = ?
12 x 12 = 144
Write the related facts using these 2 numbers as factors: 4, 5, __
5 x 4 = 20
4 x 5 = 20
20 divided by 5 = 4
20 divided by 4 = 5
Write a related fact that uses the inverse operation.
144 divided by 12 equals
12 x 12 = 144
8 x __ = 64
64 divided by 8 = ___
8 x 8 = 64
64 divided by 8 = 8
Rachel baked 36 muffins for her friends. She can pack 4 muffins in a box. How many boxes of muffins can she give to her friends?
36 divided by 4 equals 9
9 boxes
9 x 11=?
9 x 11 = 99
Write a related facts using this fact: 6 x __ = 36
6 x 6 = 36
6 x 6 = 36
36 divided by 6 = 6
36 divided by 6 = 6