Doubles Math Facts!

Doubles Math Facts!

By Stephanie Bugglin

What is Double?

• Double is 2 of he same thing!

• 2a=a+a

Adding Doubles

• Adding a number to itself.

• Example: 5+5= 10

Practice and Examples

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3+3=

Multiplying Doubles (x2)

• When multiplying by 2, you are making 2 groups of the thing you are multiplying.

• Example: 4x2=8

Practice and Examples

2x5=

(2 groups of 5)

Now count them!

What do you do when you add double?

a. Add the number to itself (9+9)

b. Add the number to the next higher number (8+9)

c. Add 2 to the number (2+9)

Next Question

Correct!

Try Again.

• 8+9=17

• When you add doubles, you add the same number twice. 8+8 or 9+9 would both be doubles facts

Try again.

• 2+9=11

• Adding 2+2 or 9+9 would be examples of doubles facts

What do you do when you double while multiplying?

a. Multiply the number by itself (8x8=8 groups of 8)

b. Multiply the number by 2 (8x2= 2 groups of 8)

c. Multiply the number by 1(8x1=a group of 8)

Next Question

Try again.

• 8x8=64

• This would be 8 groups of 8

• Double 8 is 8x2 (2 groups of 8)

Correct!

Try again.

• 8x1=8 This is 1 group of 8

• Doubling 8 is 2 groups of 8.

What is 4+4?

a. 6

b. 12

c. 8

Next Question

Try again.

• 3+3=6

• 4+4=8

Try again.

• 6+6=12

• 4+4=8

Correct!

What is 3x3?

a. 6

b. 9

c. 4

Next Question

Try again.

• 3+3=6

• 3x3=9

Correct!

Try again.

• 2x2=4

• 3x3=9

Double means 2!

a. True

b. False

Correct!

Try again.

• Doubling something means you have 2 of them!

Great job!Sources: Stephanie Bugglin