Decomposing 3 or 6
Decompose using a 2s and 1s fact to solve 3 x 6
2 x 6 = 12
1 x 6 = 6
12 + 6 = 18
3 x 6 = 18
Decompose using a 5s and 2s fact to solve 7 x 4
5 x 4 = 20
2 x 4 = 8
20 + 8 = 28
7 x 4 = 28
Decompose to solve 9 x 3
5 x 3 = 15
4 x 3 = 12
15 + 12 = 27
9 x 3 = 27
Use doubles to find the unknown.
6 x 2 = 12
6 x 4 = ___
6 x 2 = 12
6 x 4 = 24
Rilea and Lylah are going school shopping and need new markers. They bought 4 packs of markers and each pack has 6 markers in it. How many markers did the girls buy?
4 x 6 = 24 markers
Decompose using a 2s and 1s fact to solve 4 x 3
4 x 2 = 8
4 x 1 = 4
8 + 4 = 12
4 x 3 = 12
Decompose using a 5s and 2s fact to solve 5 x 7
5 x 5 = 25
5 x 2 = 10
25 + 10 = 35
5 x 7 = 35
Decompose to solve 8 x 9
8 x 5 = 40
8 x 4 = 32
40 + 32 = 72
8 x 9 = 72
Use doubles to find the unknown.
3 x 4 = 12
6 x 4 = ___
3 x 4 = 12
6 x 4 = 24
Will and Ryker are going on a scavnger hunt. They find 6 treasures in each of 6 holes. How many treasures did the boys find? Decompose to find the unknown.
Check students work.
6 x 6 = 36 treasures
Decompose using 3s facts to solve 6 x 5
3 x 5 = 15
3 x 5 = 15
15 + 15 = 30
6 x 5 = 30
Decompose using 4s facts to solve 8 x 3
4 x 3 = 12
4 x 3 = 12
12 + 12 = 24
8 x 3 = 24
Decompose to solve 9 x 4
5 x 4 = 20
4 x 4 = 16
20 + 16 = 36
9 x 4 = 36
Use doubles to find the unknown.
7 x 4 = 28
7 x 8 = ___
7 x 4 = 28
7 x 8 = 56
Aiden, Scarlet, and Talon are working on a group project for class. It takes them 3 weeks to complete the project. How many days did it take to complete the project?
3 x 7 = 21 days
Decompose using a 5s and 1s fact to solve 8 x 6
8 x 5 = 40
8 x 1 = 8
40 + 8 = 48
8 x 6 = 48
Decompose using a 5s and 3s fact to solve 8 x 8
8 x 5 = 40
8 x 3 = 24
40 + 24 = 64
8 x 8 = 64
Decompose to solve 7 x 9
7 x 5 = 35
7 x 4 = 28
35 + 28 = 63
7 x 9 = 63
Use doubles to find the unknown.
3 x 7 = 21
6 x 7 = ___
3 x 7 = 21
6 x 7 = 42
Ada is starting a vegetable garden. She plants carrots in 7 rows with 8 carrots in each row. Draw an array and decompose a factor to find how many carrots Ada plants.
Check students work.
7 x 8 = 56 carrots
Which of the following correctly decomposes 7 x 6 ?
A. 7 x 6 = 2 x 3 + 5 x 3
B. 7 x 6 = 5 x 6 + 2 x 6
C. 7 x 6 = 5 x 2 + 6 x 6
B
Which of the following correctly decomposes 8 x 4 ?
A. 8 x 4 = 4 x 4 + 4 x 4
B. 8 x 4 = 4 x 2 + 4 x 2
C. 8 x 4 = 8 x 4 + 8 x 2
A
Which of the following correctly decomposes 9 x 8 ?
A. 9 x 8 = 5 x 4 + 4 x 4
B. 9 x 8 = 9 x 4 + 9 x 2
C. 9 x 8 = 5 x 8 + 4 x 8
Use doubles to find the unknown.
4 x 8 = 32
8 x 8 = ___
4 x 8 = 32
8 x 8 = 64
Eagle has a collection of toy cars. He places his toy cars in 8 rows with 4 cars in each row. Draw an array and decompose a factor to find how many toy cars Eagle has.
Check students work.
8 x 4 = 32 toy cars