Doubles
What is this doubles fact?
__ + __ = 8
4 + 4
5 x 2 = ?
5 x 2 = 10
2 x 10 = ?
2 x 10 = 20
7 x 2 = ? x 7
7 x 2 = 2 x 7
A garden has 4 rows of tomato plants. There are 5 plants in each row. How many tomato plants are there?
4 x 5 = 20 tomato plants
What is this doubles fact?
__ + __ = 12
6 + 6
3 x 7 = ?
3 x 7 = 21
5 x 10 = ?
5 x 10 = 50
8 x 3 = 24
Write a different equation for this fact family.
3 x 8 = 24
Maya ran 3 miles every day for 7 days. How many miles did she run in total?
7 x 3 = 21 miles
What is this doubles fact?
__ + ___ = 18
9 + 9
6 x 6 = ?
6 x 6 = 36
10 x 4 = ?
10 x 4 = ?
True or False:
Changing the order of the factors changes the final product.
A carton holds 6 eggs. If you have 8 full cartons, how many eggs do you have?
8 x 6 = 48 eggs
What is this doubles fact?
__ + __ = 16
8 + 8
4 x 8 = ?
4 x 8 = 32
8 x 10 = ?
8 x 10 = 80
What is the product of 9 x 6?
What is the product of 6 x 9?
54
A baker made 9 cakes. Each cake uses 4 sticks of butter. How many sticks of butter did the baker use?
9 x 4 = 36 sticks of butter
What is this doubles fact?
__ + __ = 24
12 + 12
7 x 9 = ?
7 x 9 = 63
10 x 9 = ?
10 x 9 = 90
Which property proves that 2 x 5 = 4 is the same as 5 x 2 = 4?
Commutative Property tells us the order of the factors does not change the product!
Mr. Lee bought 10 packs of colored pencils. Each pack has 8 pencils. How many pencils did he buy?
10 x 8 = 80 pencils