Let's solve each question on the
"Measuring Mass Using Non-Standard Units Worksheet" step by step. This worksheet uses balance scales to compare the mass of animals with non-standard units (blocks, pencils, erasers).
---
1a. What is the mass of the frog?
We see:
- On one side: 3 blocks (labeled Aa, Bb, Cc)
- On the other side: a frog
- The scale is balanced.
✔ So, the
frog has the same mass as 3 blocks.
Answer:
👉
3 blocks
---
1b. What would the scale look like if you took 2 blocks away?
Original: 3 blocks = 1 frog
Now remove 2 blocks → only 1 block remains on the left.
So:
- Left side: 1 block
- Right side: 1 frog
Since the frog is heavier than 1 block, the
frog side will go down, and the block side will go up.
Look at the two options:
- First option: Frog side down →
✔ Correct
- Second option: Balanced →
✘ Incorrect
Answer:
👉 Circle the
first scale (frog side down)
---
2a. What is the mass of the mouse?
We see:
- Left side: 2 pencils (red and yellow)
- Right side: a gray mouse
- Scale is balanced.
✔ So, the
mouse has the same mass as 2 pencils.
Answer:
👉
2 pencils
---
2b. What would the scale look like if you added 2 pencils?
Original: 2 pencils = 1 mouse
Add 2 more pencils → now 4 pencils on the left.
Left side: 4 pencils
Right side: 1 mouse
So the
left side is heavier → it will go down.
Look at the two options:
- First option: Pencils side down →
✔ Correct
- Second option: Mouse side down →
✘ Incorrect
Answer:
👉 Circle the
first scale (pencils side down)
---
3a. What is the mass of the bird?
We see:
- Left side: 3 pencils (yellow, red, blue)
- Right side: a purple bird
- Scale is balanced.
✔ So, the
bird has the same mass as 3 pencils.
Answer:
👉
3 pencils
---
3b. What would the scale look like if you took 1 pencil away?
Original: 3 pencils = 1 bird
Remove 1 pencil → 2 pencils left on the left side.
Now:
- Left: 2 pencils
- Right: 1 bird
Bird is heavier →
bird side goes down
Look at the options:
- First option: Bird side down →
✔ Correct
- Second option: Pencils side down →
✘ Incorrect
Answer:
👉 Circle the
first scale (bird side down)
---
4a. What is the mass of the snail?
We see:
- Left side: 2 erasers (blue)
- Right side: a snail
- Scale is balanced.
✔ So, the
snail has the same mass as 2 erasers.
Answer:
👉
2 erasers
---
4b. What would the scale look like if you added 2 erasers?
Original: 2 erasers = 1 snail
Add 2 more erasers → now 4 erasers on the left.
Left: 4 erasers
Right: 1 snail
So the
left side is heavier → eraser side goes down.
Look at the options:
- First option: Erasers side down →
✔ Correct
- Second option: Snail side down →
✘ Incorrect
Answer:
👉 Circle the
first scale (erasers side down)
---
✔ Final Answers Summary:
| Question | Answer |
|--------|--------|
| 1a | 3 blocks |
| 1b | Circle the scale where frog side is down |
| 2a | 2 pencils |
| 2b | Circle the scale where pencils side is down |
| 3a | 3 pencils |
| 3b | Circle the scale where bird side is down |
| 4a | 2 erasers |
| 4b | Circle the scale where erasers side is down |
This worksheet teaches students how to compare masses using
non-standard units and understand how changes in weight affect balance scales. It reinforces concepts of
equality, addition, and subtraction in a visual, hands-on way.
Parent Tip: Review the logic above to help your child master the concept of nonstandard measurement worksheet.
