Name: Date: Class:

Worksheet 10.1 Comparing masses

1. Compare the two objects. Which object is heavier or lighter than the other? Circle the correct answer.

a.

is (heavier/lighter) than

b.

is (heavier/lighter) than

c.

is (heavier/lighter) than

© 2012 Alston Publishing House Pte Ltd

Name: Date: Class:

2. Compare the two objects. Fill in the blanks with either ‘heavier’ or ‘lighter’.

a.

is than

b.

is than

c.

is than

© 2012 Alston Publishing House Pte Ltd

BM 1

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© 2012 Alston Publishing House Pte Ltd

BM 10.3 Unknown masses

(1) Find the mass of the pen and the stapler.Clue: The total mass of the pen and the stapler is 5 units.

(2) Find the mass of the vase and the book.Clue: 1 more unit has to be added to the scale on the right to balance it.

(3) Find the mass of the parcel and the bottle.

© 2012 Alston Publishing House Pte Ltd

Name: Date: Class:

Worksheet 10.4 Masses of objects at home

Look around your house. Find five items and find their masses using clothes pegs. In the table below, draw the items from the lightest to the heaviest and write down the measurements.

Lightest item

clothes pegs

clothes pegs

clothes pegs

clothes pegs

Heaviest item

clothes pegs

© 2012 Alston Publishing House Pte Ltd