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Year 5

Use known facts to derive common conversions over 1

I can use known facts to derive common conversions over 1

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New
New
Year 5

Use known facts to derive common conversions over 1

I can use known facts to derive common conversions over 1

Download all resources
Share activities with pupils

Lesson details

Key learning points

  1. If 1 km is equal to one lot of 1,000 m, then 3 km is equal to three lots of 1,000 m, which is 3,000 m
  2. If 1 l = 1,000 ml, then 4 l = 4 x 1,000 ml = 4,000 ml

Common misconception

Pupils may see, for example, 3.25 kg and convert it to 3 kg and 25 g rather than 3 kg and 250 g.

The lesson presents fractions and decimals as parts of whole circles. As long as pupils know that 1 kg = 1,000 g, they should see from the representation that 0.25 kg = 250 g as 250 + 250 + 250 + 250 = 1,000

Keywords

  • Equivalent - When two or more things have the same value.

  • Convert - Change a value or expression from one form to another.

Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

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Starter quiz

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6 Questions

Q1.
Identify the unit fractions.
Correct answer: $$ \frac{1}{5} $$
Correct answer: $$ \frac{1}{7} $$
Correct answer: $$ \frac{1}{2} $$
$$ \frac{3}{5} $$
$$ \frac{2}{4} $$
Q2.
Match the fraction notation with the decimal notation that is equivalent.
Correct Answer:1 $$ \frac{1}{4} $$,1.25

1.25

Correct Answer:1 $$ \frac{3}{4} $$,1.75

1.75

Correct Answer:1 $$ \frac{7}{10} $$,1.7

1.7

Correct Answer:1 $$ \frac{1}{5} $$,1.2

1.2

Q3.
$$ \frac{3}{4} $$ km = 0.75 km = m
Correct Answer: 750, 750 m
Q4.
$$ \frac{4}{5} $$ m = 0.8 m = mm
Correct Answer: 800, 800 mm
Q5.
$$ \frac{7}{10} $$ l = 0.7 l = ml
Correct Answer: 700, 700ml
Q6.
How many ml of water is in this container? ml
An image in a quiz
Correct Answer: 400, 400ml

Exit quiz

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6 Questions

Q1.
Look at the image. What is this mass as a decimal?
An image in a quiz
0.4 kg
Correct answer: 1.4 kg
4.1 kg
14 kg
Q2.
Look at the image. What is this mass as a mixed number?
An image in a quiz
1 $$ \frac{1}{4} $$ kg
1 $$ \frac{4}{6} $$ kg
Correct answer: 1 $$ \frac{4}{10} $$ kg
Q3.
Convert 5.6 kg into grams.
Correct answer: 5,600 g
560 g
500 g
5,000 g
Q4.
Convert 7.25 l into ml.
7,000 ml
725 ml
Correct answer: 7,250 ml
700 ml
Q5.
Convert 1.4 kg into grams. g
An image in a quiz
Correct Answer: 1,400 , 1,400g, 1400
Q6.
Convert 8.75 km into m. m
Correct Answer: 8,750 , 8,750 m, 8750

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