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