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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
5 pears weigh 700 g
These 3 boxes weigh 8 kg 100g
This orange weighs 60 g.
This bag of chips weighs 350g
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
1 ½ kg of vegetables 1 kg 300 g
1kg 500g
The point seperates the grams from the
kilograms
1135g2160g1405g7300g1185g7320g6850g
1.135kg2.160kg1.405kg7.300kg1.185kg7.320kg6.850kg
1kg 135g2kg 160g1kg 405g7kg 300g1kg 185g7kg 320g6kg 850g
Examples
How many 200 g will balance:
600g = 3
1 kg =
200g, 200g, 200g
200g, 200g, 200g, 200g, 200g 5
1 kg 400 g1 kg
400g 200g, 200g 2
5
7
+
How many 100g weights will balance:
200g =
300 g =
½ kg =
1 ½ kg =
500g =
1 kg 200g =
2 kg =
2
3
5500g =
1 kg 500g = 15
5
10 + 2 = 12
10 + 5 =
2000g = 20
Here are some weights
50g, 100g, 200g, 500g
Which of these weights would you use to balance:
1) 150g =
2) 350g =
3) 900g =
4) 1 kg =
5) ½ kg =
100g 50 g
200g 100g 50g
500g 200g 200g
500g 500g
500g
Which 3 of these weights would you use to balance:
Here are some weights:50g, 100g, 200g, 500g, 1kg
1) 800g =2) 1½ kg =3) 1kg 50g =4) 300g =5) 900g =6) 2kg 500g =7) 3kg =8) 2 kg =
500g, 200g, 100g500g, 500g, 500g
500g, 500g, 50g
100g, 100g, 100g500g, 200g, 200g.
1kg, 1kg, 500g1kg, 1kg, 1kg1kg, 500g, 500g
Ann weighs 35kg 150g
Rick weighs 29kg 370g
Helen weighs 43kg 200g
1. Who is the lightest?
2. Who is the heaviest?
3. How much heavier is Helen than Ann?
4. What is the total weight of Rick and Ann?
RickHelen 43kg 200g -
35kg 150g
8kg 50g
29kg 370g+
35kg 150g
64kg 520g