Sure! Let’s solve each problem step by step. The
average (also called the
mean) is calculated by:
>
Add all the numbers together, then divide by how many numbers there are.
---
Problem 1: Science Test Scores
Scores:
89, 90, 95, 72, 83, 100, 94
- Step 1: Add them up
89 + 90 = 179
179 + 95 = 274
274 + 72 = 346
346 + 83 = 429
429 + 100 = 529
529 + 94 =
623
- Step 2: Count the number of scores →
7
- Step 3: Divide total by count → 623 ÷ 7 =
89
✔ Answer: 89
---
Problem 2: Family Trip Mileage
Miles:
345, 279, 583, 404, 556, 702, 636
- Step 1: Add them up
345 + 279 = 624
624 + 583 = 1,207
1,207 + 404 = 1,611
1,611 + 556 = 2,167
2,167 + 702 = 2,869
2,869 + 636 =
3,505
- Step 2: Count the trips →
7
- Step 3: 3,505 ÷ 7 =
500.714... → Round to nearest whole number? Since it's mileage, often we keep one decimal.
But since the worksheet doesn’t specify rounding, let’s give exact or rounded reasonably.
✔ Answer: 500.7 miles (or 501 if rounding to whole number — but 500.7 is more precise)
*(Note: 3505 ÷ 7 = 500.714285… so 500.7 is fine)*
---
Problem 3: DVD Prices
Prices:
$24.65, $20.99, $25.59, $26.90, $27.10, $22.36
- Step 1: Add them
24.65 + 20.99 = 45.64
45.64 + 25.59 = 71.23
71.23 + 26.90 = 98.13
98.13 + 27.10 = 125.23
125.23 + 22.36 =
147.59
- Step 2: Count prices →
6
- Step 3: 147.59 ÷ 6 =
24.5983...
→ Round to nearest cent:
$24.60
✔ Answer: $24.60
---
Problem 4: Daily Temperatures (°F)
Temperatures:
78°, 82°, 85°, 74°, 98°, 90°, 80°, 62°, 71°, 91°
- Step 1: Add them
78 + 82 = 160
160 + 85 = 245
245 + 74 = 319
319 + 98 = 417
417 + 90 = 507
507 + 80 = 587
587 + 62 = 649
649 + 71 = 720
720 + 91 =
811
- Step 2: Number of days →
10
- Step 3: 811 ÷ 10 =
81.1
✔ Answer: 81.1 °F
---
Problem 5: Shipping Container Weights (lbs)
Weights:
45,824; 56,189; 71,291; 30,219; 89,331
- Step 1: Add them
45,824 + 56,189 = 102,013
102,013 + 71,291 = 173,304
173,304 + 30,219 = 203,523
203,523 + 89,331 =
292,854
- Step 2: Number of containers →
5
- Step 3: 292,854 ÷ 5 =
58,570.8
✔ Answer: 58,570.8 lbs
---
Problem 6: Marquee Lights (5 venues)
Numbers:
a. 7,465
b. 9,556
c. 7,120
d. 10,229
e. 8,089
- Step 1: Add them
7,465 + 9,556 = 17,021
17,021 + 7,120 = 24,141
24,141 + 10,229 = 34,370
34,370 + 8,089 =
42,459
- Step 2: Number of venues →
5
- Step 3: 42,459 ÷ 5 =
8,491.8
✔ Answer: 8,491.8 lights
---
##
✔ Final Answers Summary:
1.
89
2.
500.7 miles
3.
$24.60
4.
81.1 °F
5.
58,570.8 lbs
6.
8,491.8 lights
Let me know if you’d like these rounded differently (e.g., to whole numbers) — but these are accurate as per standard average calculation.
Parent Tip: Review the logic above to help your child master the concept of average worksheet pdf.
