Teach Kids 5 Step Break Apart Subtraction (2 Digit Numbers)

Teach Kids Break Apart Subtraction (2 digit numbers)
-10
-5
-2
Number line
Largest
Number
-5
-2
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 20 31 32 33 34 35
-10
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Different strategies, same answer 18
Regrouping
Borrow from 10(s)
to give to the 1(s)
Break Apart
Subtraction
35 – 17 =____
10 7
3 5
1 7
1 8
tens ones
1
2
5 2
18
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35

Step One: Start with the largest number 35
35 – 17 = __
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 20 31 32 33 34 35

Step Two: Break apart 17 into 1 ten and 7 ones
35 – 17 = __
10 7
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 20 31 32 33 34 35

35 – 17 = __
10 7
5
-5
Step Three: Break apart the 7(ones). Since 35 has 5
(ones) break the first part of 7 into 5 ones.
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 20 31 32 33 34 35

35 – 17 = __
10 7
5
-5
Step Four: The second part becomes 2 (ones).
2
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 20 31 32 33 34 35

Step Five: Start at 35 (the largest number) on the number
line. Then subtract 10, next 5 and lastly 2.
35 – 17 = __
10 7
5 2
-5
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 20 31 32 33 34 35

35 – 17 = __
10 7
5 2
-10
-5
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 20 31 32 33 34 35
.

35 – 17 = __
10 7
5 2
-10
-5
-5
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 20 31 32 33 34 35
.

35 – 17 = __
10 7
5 2
-10
-5
-2 -5
-2
18
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 20 31 32 33 34 35
.

25 – 19 = ___
10
5
27 – 19 = ___
9
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
2
-10
-5
Have kids fill in the blanks with the correct numbers.
-2

25 – 19 = ___
10
5
27 – 19 = ___
9
2
-10
-5
Completed break apart subtraction problems
-2
6
9
4
-4
8
10
7
-10
-7
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

56 – 19 = ____
36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56
61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81
81 – 18 = ____
35 – 27 = ___
89 101112 13141516171819 2021 22 2324 2526 2728 2930 31 32 3334 35
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
26 – 17 = ____
1.
2.
3.
4.

56 – 19 = ____
36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56

56 – 19 = ____
36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56
10 9

56 – 19 = ____
36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56
10 9
6

56 – 19 = ____
36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56
10 9
6 3

56 – 19 = ____
36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56
10 9
6 3
-10

56 – 19 = ____
36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56
10 9
6 3
-10
-6
-3

56 – 19 = ____
36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56
10 9
6 3
-10
-6
-3
37

56 – 19 = ____
36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56
10 9
6 3
61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81
-10
-6
-3
81 – 18 = ____
37
10 8
1 7
-10
-7 -1
35 – 27 = ___
89 101112 13141516171819 2021 22 2324 2526 2728 2930 31 32 3334 35
20 7
5
8
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
26 – 17 = ____
2
10 7
6 1
9
-10
-6
-1
63
-10
Completed break apart subtraction problems
2.
1. 3.
4.
-5
-2

34 – 17 = ____
10 7
4 3
30 – 25 = ____
20 5
52 – 27 = ___________
20 7
2 5
47 – 27 = ___________
20 7
Have kids fill in the correct numbers in the boxes on the number line.
1.
2.
3.
4.

34

34
24
34 - 10 = 24

34
24 – 4 = 20
20 24

34
24
20
17
20- 3 = 17

34
24
20
17
17

34 – 17 = ____
10 7
4 3
30 – 25 = ____
20 5
52 – 27 = _________
20 7
2 5
47 – 27 = ___________
20 7
34
30
52
47
24
10 27
32
20
17 30
25
20
5
17
2.
1. 3.
4.
5
25
20

Teach Kids 5 Step Break Apart Subtraction (2 Digit Numbers)

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