Practice subtracting numbers that end in a 9 using mental math.
55 - 19 = 55 - 20 = +1 =
33 - 9 = 33 - 10 = + 1 =
28 - 9 = 29 - 10 = + 1 =
67 - 29 = 67 - 30 = + 1 =
48 - 19 = 48 - 20 = + 1 =
84 - 49 = - = 34 + 1 = 35
45 - 19 = - = 25 + 1 = 26
52 - 9 = - = 42 + 1 = 43
74 - 49 = - = 24 + 1 + 25
58 - 9 = - 10 = 48 + 1 = 49
Practice subtracting numbers in the hundreds.
433 - 196 = 433 - 200 =
+ 4 =
367 - 192 = 367 - 200 =
+ 8 =
244 - 29 = 244 - 30 = + 1=
135 - 27 = 135 - 30 = + 3 =
320 - 198 = 320 - = + 2 = 122
200 - 37 = 200 - 40 = + 3 =
169 - 98 = 169 - 100 =
+ 2 =
712 - 193 = 712 - 200 =
+ 7 = 519
Complete the problems below.
TH
H
T
O
1,
2
8
6
3,
9
4
5
TH
H
T
O
1,
5
3
5
2,
8
9
5
TH
H
T
O
3,
8
7
5
4,
4
4
7
TH
H
T
O
2,
8
8
8
4,
7
6
5
TH
H
T
O
3,
5
5
5
3,
6
7
8
TH
H
T
O
2,
6
9
8
4,
6
6
6
4,
4
4
3
4,
6
7
8
3,
3
3
9
5,
9
9
4
2,
7
3
1
3,
3
5
9
2,
3
5
6
3,
5
8
9
1,
3
5
7
3,
4
7
8
2,
5
6
5
5,
5
2
5
3,
5
2
5
3,
5
2
5
2,
1
9
1
1,
9
1
9
2,
7
8
9
4,
4
3
5
2,
9
9
9
3,
8
8
7
1,
2
3
4
7,
8
8
2
2,
7
7
7
4,
6
6
6
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