Estimating and Measuring Mass ⚖️

Name: _______________________________
Date: _______________________________
Remember: Mass is how heavy something is. We measure mass in grams (g) and kilograms (kg).
1 kilogram (kg) = 1000 grams (g)

Part A: Estimate First, Then Measure

For each object, write your estimate before you measure. Then measure and record the actual mass.

Object My Estimate Actual Mass
1. A pencil ________ g ________ g
2. A glue stick ________ g ________ g
3. A pair of scissors ________ g ________ g
4. A book ________ g ________ g
5. A lunch box (with food) ________ g ________ g

Part B: Circle the Best Estimate

Circle the most sensible estimate for each object.

1. An apple: 50 g     150 g     5 kg
2. A bag of flour: 100 g     1 kg     10 kg
3. A feather: 2 g     200 g     2 kg
4. A watermelon: 50 g     500 g     5 kg

Part C: Challenge Questions

1. If an orange has a mass of 200 g, what would 3 oranges weigh?

Answer: ________________

2. Which unit would you use to measure a car: grams or kilograms? ________________

3. Name one object that would weigh about 1 kilogram: ________________________________