Answer:
1. 7 - 3 + 8 × 5
7 - 3 + 40
4 + 40
44
2. 6 + 10 × 2 ÷ 4
6 + 20 ÷4
6 + 5
11
3. 5 + 81 ÷ 9 × 3 - 7
5 + 9 × 3 -7
5 + 27 - 7
32 - 7
25
4. 84 - 8 ÷ 2 × 3
84 - 4 × 3
84 - 12
72
5. 16 + 8 × 4 - 9 ÷ 3
16 + 32 - 9 ÷ 3
16 + 32 - 3
48 - 3
45
6. 4 + 3 × 1 + 6 - 1
4 + 3 + 6 - 1
7 + 6 - 1
13 - 1
12
7. 60 × 2 + 5 - 3 + 8 × 6 - 1
120 + 5 - 3 + 48 - 1
125 - 3 + 48 - 1
122 + 48 - 1
170 - 1
169
8. 16 ÷ 2 ÷ 4 + 4 × 2 - 16 × 4
8 ÷ 4 + 4 × 2 - 16 × 4
2 + 4 ×2 - 16 × 4
2 + 8 - 64
10 - 64
-54
9. 24 ÷ 6 + 1 + 8 + 3 × (-4) - 11
4 + 1 + 8 + 3 × (-4) -11
4 + 1 + 8 + (-12) -11
13 + (-12) -11
1 - 11
-10
10. 7 + 3 - 2.5 × (-3) - 0.5 + 3
7 + 3 + 7.5 - 0.5 +3
17.5 - 0.5 + 3
17 + 3
20
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Answers & Comments
Answer:
1. 7 - 3 + 8 × 5
7 - 3 + 40
4 + 40
44
2. 6 + 10 × 2 ÷ 4
6 + 20 ÷4
6 + 5
11
3. 5 + 81 ÷ 9 × 3 - 7
5 + 9 × 3 -7
5 + 27 - 7
32 - 7
25
4. 84 - 8 ÷ 2 × 3
84 - 4 × 3
84 - 12
72
5. 16 + 8 × 4 - 9 ÷ 3
16 + 32 - 9 ÷ 3
16 + 32 - 3
48 - 3
45
6. 4 + 3 × 1 + 6 - 1
4 + 3 + 6 - 1
7 + 6 - 1
13 - 1
12
7. 60 × 2 + 5 - 3 + 8 × 6 - 1
120 + 5 - 3 + 48 - 1
125 - 3 + 48 - 1
122 + 48 - 1
170 - 1
169
8. 16 ÷ 2 ÷ 4 + 4 × 2 - 16 × 4
8 ÷ 4 + 4 × 2 - 16 × 4
2 + 4 ×2 - 16 × 4
2 + 8 - 64
10 - 64
-54
9. 24 ÷ 6 + 1 + 8 + 3 × (-4) - 11
4 + 1 + 8 + 3 × (-4) -11
4 + 1 + 8 + (-12) -11
13 + (-12) -11
1 - 11
-10
10. 7 + 3 - 2.5 × (-3) - 0.5 + 3
7 + 3 + 7.5 - 0.5 +3
17.5 - 0.5 + 3
17 + 3
20