ESTIMATING WEIGHT - WHICH IS BIGGER?
To be able to estimate which is bigger in metric and imperial weight
you need to remember some rough conversions.
Here are some I think might be useful. They are not exact.
5 kilograms
=
11 pounds
(a large bag of potatoes)
1 kilogram
=
just over 2 pounds
(a bag of sugar)
450 grams
=
1 pound
(a tin of beans)
120 grams
=
4 ounces
(an apple)
30 grams
=
1 ounce
(a bag of crisps)
Add your own rough conversions if they help you to remember the
different weights.
These 2 facts are more exact.
2.2 pounds
28 grams
1 ounce
f lex i p
1 kilogram =
=
A.
Now try this exercise to see if you can compare
Metric and Imperial weights. Which is bigger?
1)
1 pound or 500 grams
2)
1lb or 0.4kg
3)
2lb or 1kg
4)
3lb or 1.5kg
5)
5lb or 2kg
6)
1 ounce or 25 grams
7)
4oz or 125g
8)
8oz or 200g
9)
4oz or 100g
10)
12oz or 0.5kg
11)
½lb or 250g
12)
25lb or 10kg
ac k s
1
B.
1)
A recipe says use 8oz butter. Is a 250g packet enough?
Would you use all of it?
2)
A recipe says use 10oz flour, is a small packet - 500g enough?
3)
Your neighbour asks you to buy ¼lb tea for him. Should you
buy 125g or 250g?
4)
Jan's mum put ½lb marg on her shopping list. Should Jan buy
a 250g or a 500g pack?
5)
A recipe says 4oz nuts. Is a 100g packet enough?
6)
On a holiday in Spain, Liam decides to buy some grapes and
tomatoes for a picnic. He wants about 1lb tomatoes and 9oz
grapes. How many grams should he ask for?
7)
Chloe works out from an old chart that her baby should weigh
9lb when he is 5 weeks old. At the clinic they tell her the
baby weighs 4.1kg. Is he ok?
8)
Namib's friend asked him to buy a 3lb bag of flour. He can
buy 1kg, 1.5kg or 2kg. Which should he buy?
9)
Maire has a recipe asking for 6oz raisins. Should she buy
250g or 500g? Roughly how much will she have left over?
10)
Amrit weighs about 75kg. What is that in pounds?
Check your answers, then discuss with your tutor what you need
to work on next.
Answers
Estimating Weight - Which Is Bigger?
A
1)
500g
2)
1lb
3)
1kg
4)
1.5kg
5)
5lb
6)
1oz
7)
125g
8)
8oz
9)
4oz
10)
12oz
250g
12)
25lb
11)
B
1)
Yes, it is enough and you would have a little left.
2)
Yes
3)
125g
4)
250g
5)
No, not quite.
6)
About 450g and 200-250g
7)
Yes
8)
1.5kg
9)
250g
She will have about 80g left
10)
165 pounds