Transcript We use grams and kilograms to weigh objects 1 kilogram = 1000 grams 1 kg = 1000g.

We use grams and
kilograms to
weigh objects
1 kilogram = 1000 grams
1 kg = 1000g
So…..
½ kg = 500g
¼ kg = 250g
½ kg
=
500g
¼ kg
=
250g
This orange weighs 60 g.
5 pears weigh 700 g
This bag of chips weighs 350g
These 3 boxes weigh 8 kg 100g
Which is heavier?
Full of paper money
Full of coins
Choose the heavier
1 kg of bananas
950g of grapes
The heaviest is…….
½kg
750g
1kg
Choose the lighter
1½
kg of vegetables
1kg 500g
1 kg 300 g
The point seperates the
grams from the kilograms
1135g
2160g
1405g
7300g
1185g
7320g
6850g
1kg
2kg
1kg
7kg
1kg
7kg
6kg
135g
160g
405g
300g
185g
320g
850g
1.135kg
2.160kg
1.405kg
7.300kg
1.185kg
7.320kg
6.850kg
Examples
How many 200 g will balance:
600g = 200g, 200g, 200g
1 kg = 200g, 200g, 200g, 200g, 200g
1 kg
1 kg 400 g
400g
200g, 200g
3
5
5 +
2
7
How many 100g weights will balance:
200g = 2
300 g = 3
½ kg = 500g = 5
1 ½ kg = 1 kg 500g = 10 + 5 = 15
500g = 5
1 kg 200g = 10 + 2 = 12
2 kg = 2000g = 20
Here are some weights
50g, 100g, 200g, 500g
Which of these weights would you use to balance:
1) 150g = 100g
50 g
2) 350g = 200g 100g
50g
3) 900g = 500g 200g 200g
4) 1 kg = 500g
5) ½ kg = 500g
500g
Here are some weights:
50g, 100g, 200g, 500g, 1kg
Which 3 of these weights would you use to balance:
1)
2)
3)
4)
5)
6)
7)
8)
800g = 500g, 200g, 100g
1½ kg = 500g, 500g, 500g
1kg 50g = 500g, 500g, 50g
300g = 100g, 100g, 100g
900g = 500g, 200g, 200g.
2kg 500g = 1kg, 1kg, 500g
3kg = 1kg, 1kg, 1kg
2 kg = 1kg, 500g, 500g
Ann weighs
35kg 150g
Rick weighs 29kg
370g
Helen weighs
43kg 200g
1. Who is the lightest?
Rick
2. Who is the heaviest? Helen
3. How much heavier is Helen than Ann?
43kg 200g 35kg 150g
8kg 50g
29kg 370g+
4. What is the total weight of Rick and Ann? 35kg 150g
64kg 520g