Problem Analysis:
The task involves two main sections:
1.
Filling in missing numbers based on the operations "1 more," "1 less," "10 more," and "10 less."
2.
Completing sums involving basic addition and subtraction.
Let's solve each section step by step.
---
Section 1: Fill in the missing numbers
####
Column a: 1 more
- Add 1 to each given number.
- 21 + 1 = 22
- 39 + 1 = 40
- 42 + 1 = 43
- 28 + 1 = 29
- 19 + 1 = 20
####
Column b: 1 less
- Subtract 1 from each given number.
- ? – 1 = 40 → 41
- ? – 1 = 26 → 27
- ? – 1 = 32 → 33
- ? – 1 = 18 → 19
- ? – 1 = 12 → 13
####
Column c: 10 more
- Add 10 to each given number.
- 22 + 10 = 32
- 31 + 10 = 41
- 18 + 10 = 28
- 5 + 10 = 15
- 16 + 10 = 26
####
Column d: 10 less
- Subtract 10 from each given number.
- ? – 10 = 29 → 39
- ? – 10 = 36 → 46
- ? – 10 = 42 → 52
- ? – 10 = 55 → 65
- ? – 10 = 72 → 82
---
Completed Table:
| a 1 more: | b 1 less: | c 10 more: | d 10 less: |
|-----------|------------|-------------|-------------|
| 21 | 41 | 22 | 39 |
| 39 | 27 | 31 | 46 |
| 42 | 33 | 18 | 52 |
| 28 | 19 | 5 | 65 |
| 19 | 13 | 16 | 82 |
---
Section 2: Complete the following sums
####
Basic Addition and Subtraction
We will solve each sum individually:
1.
e) 39 + 1 = 40
2.
f) 29 + 1 = 30
3.
g) 33 + 1 = 34
4.
h) 50 – 1 = 49
5.
i) 46 – 1 = 45
6.
j) 29 – 1 = 28
7.
k) 18 + 10 = 28
8.
l) 25 + 10 = 35
9.
m) 36 + 10 = 46
10.
n) 83 – 10 = 73
11.
o) 76 – 10 = 66
12.
p) 96 – 10 = 86
13.
q) 92 + 10 = 102
14.
r) 26 + 10 = 36
15.
s) 41 + 10 = 51
16.
t) 73 – 10 = 63
17.
u) 100 – 10 = 90
18.
v) 96 – 10 = 86
---
Final Answers:
####
Section 1: Missing Numbers
| a 1 more: | b 1 less: | c 10 more: | d 10 less: |
|-----------|------------|-------------|-------------|
| 22 | 41 | 32 | 39 |
| 40 | 27 | 41 | 46 |
| 43 | 33 | 28 | 52 |
| 29 | 19 | 15 | 65 |
| 20 | 13 | 26 | 82 |
####
Section 2: Sums
- e) 40
- f) 30
- g) 34
- h) 49
- i) 45
- j) 28
- k) 28
- l) 35
- m) 46
- n) 73
- o) 66
- p) 86
- q) 102
- r) 36
- s) 51
- t) 63
- u) 90
- v) 86
---
Final Answer Box:
\[
\boxed{
\begin{array}{c}
\text{Section 1:} \\
\begin{array}{cccc}
22 & 41 & 32 & 39 \\
40 & 27 & 41 & 46 \\
43 & 33 & 28 & 52 \\
29 & 19 & 15 & 65 \\
20 & 13 & 26 & 82 \\
\end{array} \\
\text{Section 2:} \\
e) 40, f) 30, g) 34, h) 49, i) 45, j) 28, k) 28, l) 35, m) 46, n) 73, o) 66, p) 86, q) 102, r) 36, s) 51, t) 63, u) 90, v) 86
\end{array}
}
\]
Parent Tip: Review the logic above to help your child master the concept of 10 more and 10 less worksheet.
