Mass and weight interactive worksheet - Free Printable

Let’s solve this step by step.

We are given a table with objects, and for each object, we’re told either the mass in kg or the weight in N, and we need to fill in the missing value using these formulas:

- Mass (kg) = Weight (N) ÷ 10
- Weight (N) = Mass (kg) × 10

This is based on Earth’s gravity being approximated as 10 m/s² for simplicity in school problems.

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Step 1: Tea cup

Given: Mass = 2 kg
→ Weight = 2 × 10 = 20 N

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Step 2: Paper plate

Given: Mass = 0.5 kg
→ Weight = 0.5 × 10 = 5 N

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Step 3: Laptop

Given: Weight = 300 N
→ Mass = 300 ÷ 10 = 30 kg

*(Note: This seems heavy for a laptop — real laptops are around 1–3 kg — but since this is a worksheet problem, we go with the numbers given.)*

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Step 4: Sports shoe

Given: Weight = 45 N
→ Mass = 45 ÷ 10 = 4.5 kg

*(Again, a sports shoe weighing 4.5 kg is unrealistic — that’s like a small dog! But again, we follow the math as given.)*

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Step 5: Electric kettle

Given: Mass = 18 kg
→ Weight = 18 × 10 = 180 N

*(An electric kettle weighing 18 kg? That’s extremely heavy — most are under 2 kg. But once more, we use the number provided.)*

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Now, let’s also answer the prediction part:

> Underline one statement as your prediction:
>
> a. The mass of each object will be the same as its weight
> b. The mass will be higher than the weight
> c. The mass will be lower than the weight
> d. There will be no link at all

Looking at our calculations:

- When mass is 2 kg → weight is 20 N → mass < weight
- When mass is 0.5 kg → weight is 5 N → mass < weight
- When weight is 300 N → mass is 30 kg → mass < weight? Wait — 30 vs 300 → yes, 30 < 300
- When weight is 45 N → mass is 4.5 kg → 4.5 < 45
- When mass is 18 kg → weight is 180 N → 18 < 180

So in every case, the numerical value of mass (in kg) is less than the numerical value of weight (in N) — because we multiply mass by 10 to get weight.

Therefore, the correct prediction is:
c. The mass will be lower than the weight

*(Note: This is only true numerically when using these units and g=10. In reality, mass and weight are different physical quantities — mass is in kg, weight is in Newtons — so they can’t be directly compared without context. But for this worksheet, we go with the math.)*

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Final Answer:

Prediction: c. The mass will be lower than the weight

Completed Table:

| Name of object | Mass (kg) (= weight /10) | Weight (N) (= mass x 10) |
|------------------|--------------------------|--------------------------|
| Tea cup | 2kg | 20N |
| Paper plate | 0.5kg | 5N |
| Laptop | 30kg | 300N |
| Sports shoe | 4.5kg | 45N |
| Electric kettle | 18kg | 180N |