Decomposition
Decompose 81
multiple answers: Example
27 and 54
7 x 8
56
120/12
10
Ms. Katy wanted to give 3 mini cupcakes to each of the 20 students in her class. How many mini cupcakes did Ms. Katy have to bake for her whole class?
3 x 20 = 60
Decompose 144
Multiple answers:
72 and 72
12 x 9
108
What does Ms. Katy eat for breakfast?
cottage cheese, yogurt, blueberrys, chia pudding
Luke has two ten dollar bills. His younger sister Leia has a five dollar bill. They combine their money to buy a gift for their father that costs $22. How much change will they receive?
$3
Decompose 9 x 6 and answer
Example: (9 x 3) + (9 x 3) = 54
6 x 60 =
360
(45/9) + (40/8) = 10
10
I had 42 ounces of rice. On Monday I bought 58 more ounces of rice. Then I divided all the rice into 10 equal-sized portions for dinner with friends.
42 + 58 = 100
100/10 = 10
Decompose (5 x 8)
Example (3 x 8) + (2 x 8) = 40
8 x 6 tens
480
108/12 =
108/12 = 9
I had a jar of jelly beans that weighed 56 ounces. I added 16 more ounces of jelly beans to the jar. Then I divided the jelly beans evenly into bags that each weighed 8 ounces.
56 + 16 =72
72/8 = 9
Decompose (65/5)
(50/5) + (15/5) = 13
(7 x 80) - 50 =
(2 x 12) - 5 = 19
(39/3) + (81/9) =
(12/3) + (36/3) = 16
Tricia's mother let her play outside for 15 minutes. When she went outside, she played with her dog for 5 minutes. Then she rode her bike for 4 minutes. She spend the rest of the time catching bugs. How many minutes did Tricia spend catching bugs?
6 minutes