Let's solve each scale problem step by step using the given weights:
Given:
-
Circle (●) = 0.5 kg
-
Star (★) = 2 kg
-
Square (■) = 3 kg
We will calculate the total weight on the right side of each scale, which balances with the object on the left.
---
1. First Scale: Magic Lamp vs. Star + Circle
- Right side: 1 ★ + 1 ● = 2 kg + 0.5 kg =
2.5 kg
- So, the lamp weighs
2.5 kg
✔ Answer: 2.5 kg
---
2. Second Scale: Kettle vs. 4 Squares + 1 Circle
- Right side: 4 ■ + 1 ● = (4 × 3) + 0.5 = 12 + 0.5 =
12.5 kg
- So, the kettle weighs
12.5 kg
✔ Answer: 12.5 kg
---
3. Third Scale: Watermelon Slice vs. 3 Circles
- Right side: 3 ● = 3 × 0.5 =
1.5 kg
- So, the watermelon slice weighs
1.5 kg
✔ Answer: 1.5 kg
---
4. Fourth Scale: Plant vs. 3 Stars + 1 Square + 1 Circle
- Right side: 3 ★ + 1 ■ + 1 ● = (3 × 2) + 3 + 0.5 = 6 + 3 + 0.5 =
9.5 kg
- So, the plant weighs
9.5 kg
✔ Answer: 9.5 kg
---
5. Fifth Scale: 3 Bottles vs. 3 Stars + 1 Circle
- Right side: 3 ★ + 1 ● = (3 × 2) + 0.5 = 6 + 0.5 =
6.5 kg
- So, the three bottles together weigh
6.5 kg
✔ Answer: 6.5 kg
---
6. Sixth Scale: Stack of Books vs. 1 Star + 1 Circle + 2 Squares
- Right side: 1 ★ + 1 ● + 2 ■ = 2 + 0.5 + (2 × 3) = 2 + 0.5 + 6 =
8.5 kg
- So, the books weigh
8.5 kg
✔ Answer: 8.5 kg
---
✔ Final Answers:
1.
2.5 kg
2.
12.5 kg
3.
1.5 kg
4.
9.5 kg
5.
6.5 kg
6.
8.5 kg
You can now fill in the boxes accordingly!
Parent Tip: Review the logic above to help your child master the concept of balancing scales worksheet.
