Unit 1 Review

Doubles

100

5+5 = 

10

200

6+6=

12

300

7+7=

14

400

8+8=

16

500

9+9=

18

Near Doubles

100

3+4=

7

200

8+7=

15

300

5+6=

11

400

What double helps you find the sum of 4+5=

4+4=8    so     4+5=9

500

What double helps you find the sum of 6+7=

6+6=12     so      6+7=13

Adding Three

100

8+2+3=

13

200

5+5+2=

12

300

3+3+5

11

400

7+7+1=

15

500

6+6+2=

14

Add in Any Order

100

How else can I solve 5+2=

2+5 = 

200

How else can I solve 4+3 = 

3+4=

300

How else can I add 8+5=

5+8=

400

How else can I add 6+7=

7+6=

500

How else can I add 3+4=

4+3=

Making 10 to Add

100

To make a ten first, how should I group 5+5+1= 

First group 5+5 then add 1 to get 11.

200

To make a ten first, how should I group 7+3+2=

First group 7+3 to make a 10, then add 2 to make 12.

300

To make a ten first, how should I group 5+2+5=

First group 5+5, then add 2 to get 12.

400

To make a ten first, how should I group 9+1+3=

First group 9+1, then add 3 to get 13.

500

To make a ten first, how should I group 4+6+5=

First group 4+6 ro make 10, then add 5 to make 15.