Comparing and estimating mass and volume | Exit Quiz | Oak National Academy

Look at these two bags. They are the same size. Will they have the same mass?

• Yes

• No

• The could have, but we cannot be certain.

Answer explanation

Correct! One bag might have stones inside, and the other feathers - the bag with feathers would then have a smaller mass. If both bags contained the same amount of matter, they would have the same mass. We cannot compare mass by comparing size.

Tags

CCSS.5.MD.C.3A

CCSS.5.MD.C.3B

CCSS.5.MD.C.4

Look at these bags. Which has the greater mass?

• The green bag has the greater mass.

• The orange bag has the greater mass.

• I cannot be certain.

Answer explanation

Well done! Larger objects do not always have the greater mass - it depends on the amount of matter inside then object.

Tags

CCSS.3.MD.A.2

Look at these containers. Which has the greatest capacity?

• A

• B

• I cannot be certain.

Answer explanation

Fantastic! Taller containers do not always have a greater capacity. Taller containers may be narrower and so may not hold as much liquid as shorter, wider containers.

Tags

CCSS.5.MD.C.3A

CCSS.5.MD.C.3B

CCSS.5.MD.C.4

Andeep holds a pebble and compares its mass to the mass of a 50 g egg that he is holding. The pebble feels lighter than the egg. Which statement is true?

• The pebble's mass must be greater than 50 g.

• The pebble's mass must be smaller than 50 g.

• The pebble must have a mass of 50 g.

Answer explanation

Amazing! If the pebble felt lighter than the egg, which has a mass of 50 g, then the mass of the pebble must be less that 50 g.

Tags

CCSS.3.MD.A.2

The mass of a toy car is smaller than the mass of a 50 g egg but greater than that of a 10 g pound coin. What could its mass be?

• 5 g

• 30 g

• 45 g

• 75 g

Answer explanation

Brilliant! Both 30 g and 45 g are between 10 g and 50 g. The mass of the toy car could be 30 g or 45 g.

Tags

CCSS.3.MD.A.2

Using these clues, starting with the object with the smallest mass, put these objects in order.

• Pebble

• Twig

• Leaf

Answer explanation

Well done! The twig was the only object heavier than the apple, so its mass must be the greatest. The leaf was the only object lighter than a pound coin, so its mass must be the smallest.

Tags

CCSS.1.MD.A.1