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Numbers up to 20

Subtraction

Subtract to 20

(1) Subtract the numbers

19	-	1	= _____
17	-	8	= _____
14	-	5	= _____
12	-	7	= _____
15	-	7	= _____

13	-	5	= _____
18	-	2	= _____
11	-	7	= _____
10	-	2	= _____
16	-	4	= _____

10	-	1	= _____
10	-	7	= _____
19	-	8	= _____
16	-	6	= _____
19	-	8	= _____

(2) Subtract the numbers and check using addition

15	-	1	= ___ because 14 + 1 = _______
18	-	5	= ___ because = _____________
19	-	2	= ___ because = _____________
10	-	8	= ___ because = _____________
14	-	7	= ___ because = _____________

13	-	5	= ___ because = _____________
17	-	7	= ___ because = _____________
11	-	4	= ___ because = _____________
12	-	2	= ___ because = _____________
16	-	7	= ___ because = _____________

(3) Calculate

10 + 5 = __
15 - 5 = __

10 + 9 = __
19 - 9 = __

10 + 3 = __
13 - 3 = __

10 + 6 = __
16 - 6 = __

10 + 8 = __
18 - 8 = __

10 + 4 = __
14 - 4 = __