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Operations with Integers Ten Minute Challenge Worksheet | PDF ... - Free Printable

Operations with Integers Ten Minute Challenge Worksheet | PDF ...

Educational worksheet: Operations with Integers Ten Minute Challenge Worksheet | PDF .... Download and print for classroom or home learning activities.

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Show Answer Key & Explanations Step-by-step solution for: Operations with Integers Ten Minute Challenge Worksheet | PDF ...
Let’s solve each problem one by one. We’ll go in order from 1 to 99, but since there are many, I’ll group them into chunks and check each answer carefully before moving on.

We’re dealing with integers — positive and negative numbers — and four operations: multiplication (×), division (÷), addition (+), and subtraction (–). Remember these key rules:

- Positive × Positive = Positive
- Negative × Negative = Positive
- Positive × Negative = Negative
- Same for division.
- For addition/subtraction: think of a number line or use “keep-change-flip” if needed, but mostly just combine carefully.

Let’s start solving:

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Column 1 (Problems 1–33):

1) 3 × -4 = -12
2) -1 × 9 = -9
3) -5 × -8 = 40 (negative × negative = positive)
4) 7 × -3 = -21
5) -6 × 4 = -24
6) -2 × -2 = 4
7) 7 × -9 = -63
8) -4 × 5 = -20
9) -8 × -6 = 48
10) -11 × 7 = -77
11) 12 × -3 = -36
12) -6 × -9 = 54
13) -10 × 12 = -120
14) -9 × 4 = -36
15) 12 × 12 = 144
16) 8 ÷ -2 = -4
17) -12 ÷ -6 = 2
18) -15 ÷ 3 = -5
19) 9 ÷ 3 = 3
20) -18 ÷ -3 = 6
21) -27 ÷ 9 = -3
22) -32 ÷ -4 = 8
23) 24 ÷ -6 = -4
24) -48 ÷ -12 = 4
25) 56 ÷ -8 = -7
26) 25 ÷ -5 = -5
27) -42 ÷ -7 = 6
28) 72 ÷ 6 = 12
29) -84 ÷ -12 = 7
30) -16 ÷ 4 = -4
31) -2 + 5 = 3
32) 6 - 8 = -2
33) 4 - 7 = -3

All checked.

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Column 2 (Problems 34–66):

34) -3 + 1 = -2
35) -5 - 2 = -7
36) 6 - 7 = -1
37) -9 + 5 = -4
38) 21 - 26 = -5
39) -18 + 7 = -11
40) 3 + -2 = 1
41) 1 - +4 → that’s 1 - 4 = -3
42) 5 - -6 → minus a negative is plus → 5 + 6 = 11
43) 8 + -2 = 6
44) -3 - -2 → -3 + 2 = -1
45) 12 + -9 = 3
46) -6 + -7 = -13
47) -4 - +3 → -4 - 3 = -7
48) 18 - -13 → 18 + 13 = 31
49) -3 - -7 → -3 + 7 = 4
50) -16 + -2 = -18
51) -5 × -4 = 20
52) -1 × -8 = 8
53) -3 × -5 = 15
54) 9 × -2 = -18
55) -7 × 4 = -28
56) -1 × -1 = 1
57) 8 × -9 = -72
58) -4 × 4 = -16
59) -12 × -6 = 72
60) -11 × 8 = -88
61) 12 × -5 = -60
62) -8 × -6 = 48
63) -7 × 6 = -42
64) -9 × 4 = -36
65) 11 × 11 = 121
66) 9 ÷ -1 = -9

All checked.

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Column 3 (Problems 67–99):

67) -33 ÷ -3 = 11
68) -12 ÷ 3 = -4
69) -18 ÷ -2 = 9
70) -18 ÷ -3 = 6
71) -54 ÷ 6 = -9
72) -35 ÷ -7 = 5
73) 36 ÷ -3 = -12
74) -49 ÷ -7 = 7
75) 66 ÷ -11 = -6
76) 27 ÷ -3 = -9
77) -40 ÷ -8 = 5
78) 90 ÷ 3 = 30
79) -40 ÷ -2 = 20
80) -130 ÷ 10 = -13
81) -10 + 30 = 20
82) 30 - 90 = -60
83) 40 - 50 = -10
84) -85 + 5 = -80
85) -70 - 10 = -80
86) 40 - 60 = -20
87) -120 + 80 = -40
88) 100 - 300 = -200
89) -150 + 90 = -60
90) 54 + -72 = -18
91) 16 - +41 → 16 - 41 = -25
92) 35 - -62 → 35 + 62 = 97
93) 89 + -111 = -22
94) -63 - -24 → -63 + 24 = -39
95) 14 + -37 = -23
96) -88 + -19 = -107
97) -47 - +32 → -47 - 32 = -79
98) 16 - -56 → 16 + 56 = 72
99) 146 + -200 = -54

All checked.

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Final Answer:
Here are all the answers in order from 1 to 99:

1) -12
2) -9
3) 40
4) -21
5) -24
6) 4
7) -63
8) -20
9) 48
10) -77
11) -36
12) 54
13) -120
14) -36
15) 144
16) -4
17) 2
18) -5
19) 3
20) 6
21) -3
22) 8
23) -4
24) 4
25) -7
26) -5
27) 6
28) 12
29) 7
30) -4
31) 3
32) -2
33) -3
34) -2
35) -7
36) -1
37) -4
38) -5
39) -11
40) 1
41) -3
42) 11
43) 6
44) -1
45) 3
46) -13
47) -7
48) 31
49) 4
50) -18
51) 20
52) 8
53) 15
54) -18
55) -28
56) 1
57) -72
58) -16
59) 72
60) -88
61) -60
62) 48
63) -42
64) -36
65) 121
66) -9
67) 11
68) -4
69) 9
70) 6
71) -9
72) 5
73) -12
74) 7
75) -6
76) -9
77) 5
78) 30
79) 20
80) -13
81) 20
82) -60
83) -10
84) -80
85) -80
86) -20
87) -40
88) -200
89) -60
90) -18
91) -25
92) 97
93) -22
94) -39
95) -23
96) -107
97) -79
98) 72
99) -54
Parent Tip: Review the logic above to help your child master the concept of operations with signed numbers worksheet.
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