Working with mass
What do you notice? Can you explain why?
What would you need to do differently with 100 g weights so the scale shows a mass of: 1 _
2 kg? 3 kg? 4 1 _
1.5 kg? 10 kg?
0
500
500
9
1
2 kg?
500
500
8
2
500
500
7
3
(kg)
500
500
6
4
5
500
500
1 Let’s covert kilograms to grams. We can use bar models to help us. ?g ?g ?g ?g ?g ?g 6 kilograms ? g ? g ? g 3 kilograms
grams
6 kilograms =
grams
3 kilograms =
There are twice as many grams in 6 kg as in 3 kg. We can also use what we know about multiplying by 1000. 3 × 1000 = 3000 because there are 1000 grams in a kilogram.
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04/05/2022 15:51
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