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Commutative, Associative and Distributive Laws

by Teacher Rose

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EASY MATH
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Commutative,
Associative and
Distributive
Laws
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CLIL
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EC4Cs 2022
Comic Panel 1
Group 1
20.5+100-5.10 = 100 +100-50=200-50=150
Which operation is first? What is the result?
Rounded Rectangle
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Group 2
3.40+4.30-2.20=120+120-40=240-40=200
Which operation is first? What is the result?
Rounded Rectangle
Group 3
(10+20).5-100 = 30.5-100=150-100=50
Which operation is first? What is the result?
Rounded Rectangle
Comic Panel 1
Group 4
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200.3-81:9+21:7=600-9+3=591+3=594
Which operation is first? What is the result?
Rounded Rectangle
Group 5
7.40-8.20+132.3=280-160+396=120+396=516
Which operation is first? What is the result?
Rounded Rectangle
Group 6
6.(160-150):6= 6.10:6=60:6=10
Which operation is first? What is the result?
Rounded Rectangle
Watch the video. Can we swap numbers when we do addition and multiplication?
Yes, we can.
CLIL
No, we can't.
Comic Panel 1
The "Commutative Law" say we can swap numbers over and still get the same answer when we add:
200+800 = 800+200
The "Commutative Law" say we can swap numbers over and still get the same answer when we multiply:
200.5 = 5.200
Does it matter how we group the numbers when we do addition? And multiplication?
CLIL
Yes, it does.
No, it doesn't.