Add up These Numbers Using the Complements to 20

Complements to 20

Add up these numbers using the complements to 20

1, 3 7 5 5

2, 6 7 4 3

3, 5 9 1 5

4, 2 6 8 4

5, 1 7 9 3

6, 12 5 8 5

7, 9 1 9 11

8, 15 5 8 2

9, 8 7 12 3

10, 13 7 9 1 2

Complements to 20

1, 7 8 2 3

2, 12 1 9 8

3, 3 6 17 4

4, 5 6 4 15

5, 11 13 7 9

6, 16 1 19 2 4 8

7, 1 19 18 7 3 2

8, 11 9 9 2 1 18

9, 18 1 1 17 2 1

10, 15 5 5 3 2 1 3

Complements to 100

Add up these numbers using the complements to 10, 20 and 100

1, 70 30 80 20

2, 60 40 10 90 7 3

3, 18 2 70 10 5 5

4, 70 15 15 90 10 6 4

5, 50 18 25 25 2 9 1

6, 75 10 8 2 3 2

7, 20 1 14 6 80 9

8, 50 2 40 8 6 3 1

9, 40 35 35 2 30 60 8

10, 6 7 10 70 3 4 65 30 5 4

Complements to 1000

1, 700 300 50 950 10 80 10

2, 250 600 40 150 40 20

3, 620 50 200 30 100

4, 190 60 400 50 380 120

5, 310 25 75 70 500 15 5

6, 550 70 300 100 80

7, 10 80 15 75 20 700 75 25

8, 90 80 250 50 700 30

9, 450 300 80 20 50 100

10, 730 120 120 40 80 10