PS RU P2L10 Heuristics Part Whole Model WS

Primary 2

Rev Up! Math

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Tutor

Topic Heuristics: Part-Whole Models (Lesson 10)

Heuristics: Part-Whole Models (Lesson 10)

Primary 2: Rev Up! Math

1. Sue collected 85 stickers. She bought 23 more stickers. Working

How many stickers did she have altogether?
(Complete the Model)

() ()

She had ?

=

stickers altogether.

2. Susan had 26 game cards. Her friend gave her another
87 game cards. How many game cards did Susan
have in total? (Complete the Model)

() ()

?

=

She had game cards in total.

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Primary 2: Rev Up! Math

Working

3. A shopkeeper sold 239 packets of rice on Monday and 121

packets of rice on Tuesday. How many packets of rice
did he sell on both days? (Complete the Model)

() ()

() ()

()

=

He sold packets of rice on both days.

4. Mr Tan baked a total of 126 chicken pies and tarts.He
baked 23 chicken pies. How many tarts did he bake?
(Complete the Model)

()

() ()

() ()

=

He baked tarts. 2

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Primary 2: Rev Up! Math

Remember to label your models and Working
write your number sentences!

5. Ken and John spent $460. Ken spent $125, How much
money did John spend? (Complete the model)

=

John spent $ .

6. Uncle Mike collected 893 postcards. He gave some

postcards to his son and had 250 left. How many
postcards did he give to his son? (Complete the model)

=

He gave postcards to his son. 3

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Primary 2: Rev Up! Math
Working

7. There are some children at the funfair.
120 of them are boys and 50 are girls.
How many children are there at the funfair?

=

There are children at the funfair.

*8. Mrs Tan bought some balloons for her son’s birthday
party. 20 were blue, 60 were red and 40 were yellow.
How many balloons did she buy altogether?

=
=

She bought balloons altogether. 4

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Primary 2: Rev Up! Math

Working

9. A fruit seller sold 120 apples, 30 oranges and 18
mangoes in a week. How many fruits were sold in all?

=
=

fruits were sold in all.

10. Eleanor had $900. She spent $199 on a table and $300
on a sofa. She saved the rest of her money.
How much money did she save?

=
=

She saved $ . 5

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Primary 2: Rev Up! Math

Extension Working

*11. A tin of chocolate chip cookies weighs 550 grams.
The empty tin weighs 160 grams.
What is the mass of the chocolate chip cookies? (Draw Model)

The mass of the chocolate chip cookies is grams.

*12. Mdm Soon bought a roll of wallpaper which was 340 cm long.
She cut off 2 pieces from the roll of wallpaper.

Each piece was 130 cm long.
How much wallpaper had she left? (Draw Model)

She had cm of wallpaper left. 6

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