Lesson 2

Near Doubles

100

There are 6 red counters and 7 yellow counters. Which doubles fact helps you find how many counters there are in all?

6+6 = 12

OR

7+7=14

200

There are 5 red counters and 4 yellow counters. Which doubles fact helps you find how many counters there are in all?

5+5 = 10

OR

4+4 = 8

300

There are 2 red counters and 3 yellow counters. Which doubles fact helps you find how many counters there are in all?

2+2 = 4

OR 

3+3 = 6

400

There are 10 red counters and 9 yellow counters. Which doubles fact helps you find how many counters there are in all?

10+10 = 20

OR

9+9 = 18

500

There are 8 red counters and 9 yellow counters. Which doubles fact helps you find how many counters there are in all?

8+8 = 16

9+9 = 18

Same Sum

100

Write an addition sentence that has the same sum as 2+ 6 = 8

1+7 = 8, or 7+1 =8

2+6 = 8, or 6+2 = 8

3+5 = 8, or 5+3 =8

4+4 = 8

200

Write an addition sentence that has the same sum as 4+5 = 9

1+8 = 9, or 8+1 = 9

2+7 = 9, or 7+2 = 9

3+6 = 9, or 6+3 = 9

5+4 = 9 

300

What has the same sum as 9+5?

10+3

10+4

10+5

10+6

10+4 = 14

400

What has the same sum as 9+6?

10+4

10+5

10+6

10+7

10+5 = 15

500

What has the same sum as 9+2?

10+1

10+2

10+3

10+4

10+1 = 11

Related Fact

100

What is the related addition fact to 5+2 = 7?

2 +5 = 7

200

What is the related addition fact to 3+2 = 5?

2+3 = 5

300

What is the related addition fact to 9+2 = 11?

2+9 = 11

400

What is the related addition fact to 4+6 = 10?

6+4 = 10

500

What is the related addition fact to 6+3 = 9?

3+6 = 9

Addition

100

What is 6+0?

6+0 = 6

200

What is 8+1?

8+1 = 9

300

What is 5+2?

5+2 = 7

400

What is 4+5?

4+5 = 9

500

What is 7+8?

7+8 = 15

Adding 3 Numbers

100

What is 2+9+4?

2+9+4 = 15

200

What is 5+3+5?

5+3+5= 13

300

What is 4+5+7?

4+5+7 =16

400

What is 1+2+7?

1+2+7 = 10

500

What is 3+6+5?

3+6+5= 14