Grade 1 Math Addition fact Sums of 16 to 20
Addition Fact sums of 16 to 20
1. Addition fact sums of 16:
0 +
16 = 16.
1 +
15 = 16.
2 +
14 = 16.
3 +
13 = 16.
4 +
12 = 16.
5 +
11 = 16.
6 +
10 = 16.
7 + 9
= 16.
8 + 8 = 16.
2. Addition fact sums of 17:
0 +
17 = 17.
1 +
16 = 17.
2 +
15 = 17.
3 +
14 = 17.
4 +
13 = 17.
5 +
12 = 17.
6 +
11 = 17.
7 +
10 = 17.
8 + 9
= 17.
3. Addition fact sums of 18:
0 +
18 = 18.
1 +
17 = 18.
2 +
16 = 18.
3 +
15 = 18.
4 +
14 = 18.
5 +
13 = 18.
6 +
12 = 18.
7 +
11 = 18.
8 +
10 = 18.
9 + 9
= 18.
4. Addition fact sums of 19:
0 +
19 = 19.
1 +
18 = 19.
2 +
17 = 19.
3 +
16 = 19.
4 +
15 = 19.
5 +
14 = 19.
6 +
13 = 19.
7 +
12 = 19.
8 +
11 = 19.
9 +
10 = 19.
5. Addition fact sums of 20:
0 +
20 = 20.
1 +
19 = 20.
2 +
18 = 20.
3 +
17 = 20.
4 +
16 = 20.
5 + 15
= 20.
6 +
14 = 20.
7 +
13 = 20.
8 +
12 = 20.
9 +
11 = 20.
10 +
10 = 20.
6. Add: 10 + 10 = ?
Solution:
10 + 10 = 20
Start
counting from the number after 10 and count up 10 steps: 11, 12, 13, 14, 15,
16, 17, 18, 19, 20. At last we get 20 in counting steps.
So,
10 + 10 = 20.
or,
First add ones values of tow addends and then
add tens values of two addends and in sums put the added value as per ones and
tens position.
7. Add: 18 + 2 = ?
Solution:
Start
counting from the number after 18 and count up 2 steps: 19, 20. At last we get
20 in counting steps.
So,
18 + 2 = 20.
8. Add: 9 + 8 = ?
Solution:
Start
counting from the number after 9 and count up 8 steps: 10, 11, 12, 13, 14, 15,
16, 17. At last we get 17 in counting steps.
So, 9
+ 8 = 17.
9. Add: 8 + 8 = ?
Solution:
Start
counting from the number after 8 and count up 8 steps: 9, 10, 11, 12, 13, 14, 15, 16. At last we get
16 in counting steps.
So, 8
+ 8 = 16.
10. 18 = 7 + ?
Solution:
Start
counting from the number after 7 and count up the steps to reach 18: 8, 9, 10,
11, 12, 13, 14, 15, 16, 17, 18. Here total steps number is 11.
So,
18 = 7 + 11.
11. 19 = 14 + ?
Solution:
Start
counting from the number after 14 and count up the steps to reach 19: 15, 16, 17,
18, 19. Here total steps number is 5.
So,
19 = 14 + 5.