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TOPIC: P3 ThinkingMath@onSponge

P3 ThinkingMath@onSponge 9 years 11 months ago #1

  • Eng Guan Seah
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Q on More than/less than(Multiple Individuals)Pg 55.

Question 3:

4 unit = 96-88
= 8

Why is it 4 unit not 3 unit?

Thank you.
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Re: ThinkingMath@onSponge 9 years 11 months ago #2

  • Chris Rogers
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Hi there,

There are 4 units because:
children is boys + girls
boys is 1 unit
girls is 1 unit + 28
boys+girls is 2units + 28

adults is children + 32

replace children with 2units+28
so adults is 2units+28+32
now add children + adults
2units+28 + 2units+28+32

Sorry it's a bit long without the model.
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Re:P3 ThinkingMath@onSponge 9 years 11 months ago #3

  • Eng Guan Seah
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Hi, but just can't understand: adult-2 units
isn't adult- 1 unit+28+32. Please help.
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Re:P3 ThinkingMath@onSponge 9 years 11 months ago #4

  • Chris Rogers
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Adults is 2units because adults is 32 more than children. Children is 2units + 28. See the amount highlighted in green in the picture which represents the children.

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Re:P3 ThinkingMath@onSponge 9 years 11 months ago #5

  • Eng Guan Seah
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Many thanks for your help:)
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