To solve for the missing number (N) in each equation, I will isolate N using inverse operations. Here are the step-by-step solutions:
1.
N + 15 = 43
Subtract 15 from 43: $43 - 15 = 28$
N = 28
2.
N + 27 = 54
Subtract 27 from 54: $54 - 27 = 27$
N = 27
3.
N - 10 = 2
Add 10 to 2: $2 + 10 = 12$
N = 12
4.
N × 16 = 576
Divide 576 by 16: $576 \div 16 = 36$
N = 36
5.
N ÷ 35 = 40
Multiply 40 by 35: $40 \times 35 = 1400$
N = 1400
6.
N - 32 = 5
Add 32 to 5: $5 + 32 = 37$
N = 37
7.
N + 36 = 47
Subtract 36 from 47: $47 - 36 = 11$
N = 11
8.
N + 28 = 42
Subtract 28 from 42: $42 - 28 = 14$
N = 14
9.
352 N = 16
Divide 352 by 16: $352 \div 16 = 22$
N = 22
10.
N ÷ 35 = 18
Multiply 18 by 35: $18 \times 35 = 630$
N = 630
11.
1295 ÷ N = 37
Divide 1295 by 37: $1295 \div 37 = 35$
N = 35
12.
N × 30 = 1020
Divide 1020 by 30: $1020 \div 30 = 34$
N = 34
13.
N × 38 = 912
Divide 912 by 38: $912 \div 38 = 24$
N = 24
14.
N + 33 = 65
Subtract 33 from 65: $65 - 33 = 32$
N = 32
15.
36 × N = 972
Divide 972 by 36: $972 \div 36 = 27$
N = 27
16.
30 × N = 420
Divide 420 by 30: $420 \div 30 = 14$
N = 14
17.
1092 ÷ N = 39
Divide 1092 by 39: $1092 \div 39 = 28$
N = 28
18.
N + 29 = 44
Subtract 29 from 44: $44 - 29 = 15$
N = 15
19.
N - 14 = 24
Add 14 to 24: $24 + 14 = 38$
N = 38
20.
32 × N = 544
Divide 544 by 32: $544 \div 32 = 17$
N = 17
21.
1026 ÷ N = 27
Divide 1026 by 27: $1026 \div 27 = 38$
N = 38
22.
N - 23 = 13
Add 23 to 13: $13 + 23 = 36$
N = 36
23.
37 - N = 8
Subtract 8 from 37: $37 - 8 = 29$
N = 29
24.
29 - N = 2
Subtract 2 from 29: $29 - 2 = 27$
N = 27
Final Answer:
1) N = 28
2) N = 27
3) N = 12
4) N = 36
5) N = 1400
6) N = 37
7) N = 11
8) N = 14
9) N = 22
10) N = 630
11) N = 35
12) N = 34
13) N = 24
14) N = 32
15) N = 27
16) N = 14
17) N = 28
18) N = 15
19) N = 38
20) N = 17
21) N = 38
22) N = 36
23) N = 29
24) N = 27
Parent Tip: Review the logic above to help your child master the concept of mixed operation worksheet.
