To find the average of a set of numbers, you add all the numbers together and then divide by how many numbers there are.
Let’s solve each problem one by one.
---
Problem 1: 2.70, 3.50, 1.70, 2.20
Step 1: Add them up
2.70 + 3.50 = 6.20
6.20 + 1.70 = 7.90
7.90 + 2.20 = 10.10
Step 2: Count how many numbers → 4 numbers
Step 3: Divide total by count → 10.10 ÷ 4 = 2.525
✔ Answer:
2.525
---
Problem 2: 14.1, 15.5, 14.3, 14.7, 15.9
Step 1: Add them up
14.1 + 15.5 = 29.6
29.6 + 14.3 = 43.9
43.9 + 14.7 = 58.6
58.6 + 15.9 = 74.5
Step 2: Count → 5 numbers
Step 3: 74.5 ÷ 5 = 14.9
✔ Answer:
14.9
---
Problem 3: 0.462, 4.032, 1.122, 0.656
Step 1: Add them
0.462 + 4.032 = 4.494
4.494 + 1.122 = 5.616
5.616 + 0.656 = 6.272
Step 2: Count → 4 numbers
Step 3: 6.272 ÷ 4 = 1.568
✔ Answer:
1.568
---
Problem 4: 17.45, 21.50, 12.83, 31.07, 15.50
Step 1: Add them
17.45 + 21.50 = 38.95
38.95 + 12.83 = 51.78
51.78 + 31.07 = 82.85
82.85 + 15.50 = 98.35
Step 2: Count → 5 numbers
Step 3: 98.35 ÷ 5 = 19.67
✔ Answer:
19.67
---
Problem 5: 3.7, 2.1, 4.9, 3.4, 2.7, 3.6
Step 1: Add them
3.7 + 2.1 = 5.8
5.8 + 4.9 = 10.7
10.7 + 3.4 = 14.1
14.1 + 2.7 = 16.8
16.8 + 3.6 = 20.4
Step 2: Count → 6 numbers
Step 3: 20.4 ÷ 6 = 3.4
✔ Answer:
3.4
---
Final Answer:
1) 2.525
2) 14.9
3) 1.568
4) 19.67
5) 3.4
Parent Tip: Review the logic above to help your child master the concept of averages worksheet.
