Problem Analysis:
The worksheet focuses on mental math skills, specifically addition and subtraction. The tasks involve performing simple arithmetic operations and filling in the results. Let's solve each part step by step.
---
Part 1: Addition and Subtraction Problems
#### Left Column:
1.
a. 12 more than 30
- Calculation: \( 30 + 12 = 42 \)
- Answer:
42
2.
b. 17 less than 50
- Calculation: \( 50 - 17 = 33 \)
- Answer:
33
3.
c. 15 more than 55
- Calculation: \( 55 + 15 = 70 \)
- Answer:
70
4.
d. The sum of 29 and 12
- Calculation: \( 29 + 12 = 41 \)
- Answer:
41
5.
e. 19 added to 12 gives
- Calculation: \( 12 + 19 = 31 \)
- Answer:
31
6.
f. Take away 15 from 99
- Calculation: \( 99 - 15 = 84 \)
- Answer:
84
#### Right Column:
7.
g. 9 fewer than 10
- Calculation: \( 10 - 9 = 1 \)
- Answer:
1
8.
h. 14 more than 44
- Calculation: \( 44 + 14 = 58 \)
- Answer:
58
9.
i. 99 minus 19
- Calculation: \( 99 - 19 = 80 \)
- Answer:
80
10.
j. The sum of 12 and 88 gives
- Calculation: \( 12 + 88 = 100 \)
- Answer:
100
11.
k. 19 reduced by 5
- Calculation: \( 19 - 5 = 14 \)
- Answer:
14
12.
l. 12 subtracted 88
- Calculation: \( 88 - 12 = 76 \)
- Answer:
76
---
Part 2: Wheel Diagrams
#### First Wheel (Center: 659)
-
+ 325: \( 659 + 325 = 984 \)
-
+ 63: \( 659 + 63 = 722 \)
-
+ 152: \( 659 + 152 = 811 \)
-
243 -: \( 659 - 243 = 416 \)
-
300 -: \( 659 - 300 = 359 \)
-
- 89: \( 659 - 89 = 570 \)
-
- 152: \( 659 - 152 = 507 \)
#### Second Wheel (Center: 794)
-
+ 325: \( 794 + 325 = 1119 \)
-
+ 63: \( 794 + 63 = 857 \)
-
+ 152: \( 794 + 152 = 946 \)
-
243 -: \( 794 - 243 = 551 \)
-
300 -: \( 794 - 300 = 494 \)
-
- 89: \( 794 - 89 = 705 \)
-
- 152: \( 794 - 152 = 642 \)
---
Final Answers:
#### Part 1:
1.
a. 42
2.
b. 33
3.
c. 70
4.
d. 41
5.
e. 31
6.
f. 84
7.
g. 1
8.
h. 58
9.
i. 80
10.
j. 100
11.
k. 14
12.
l. 76
#### Part 2:
-
First Wheel:
- +325: 984
- +63: 722
- +152: 811
- 243 -: 416
- 300 -: 359
- -89: 570
- -152: 507
-
Second Wheel:
- +325: 1119
- +63: 857
- +152: 946
- 243 -: 551
- 300 -: 494
- -89: 705
- -152: 642
---
Boxed Final Answer:
\[
\boxed{
\begin{array}{ll}
\text{Part 1:} & \text{a. 42, b. 33, c. 70, d. 41, e. 31, f. 84, g. 1, h. 58, i. 80, j. 100, k. 14, l. 76} \\
\text{Part 2:} & \text{First Wheel: 984, 722, 811, 416, 359, 570, 507} \\
& \text{Second Wheel: 1119, 857, 946, 551, 494, 705, 642}
\end{array}
}
\]
Parent Tip: Review the logic above to help your child master the concept of addition worksheet mental math.
