Explain that 100,000 is composed of 50,000s, 25,000s and 20,000s | Maths

Starter quiz

Complete the sentence: There are 10 __________ in ten thousand.
- thousands ✓
- hundreds
- tens
- ones
What is the value of each part of the bar model?
- '250' ✓
What is the value of each part of the bar model?
- '5,000' ✓
Give the missing number in the sequence: 8,000 $\quad$ 10,000 $\quad$ ______ $\quad$ 14,000 $\quad$ 16,000 $\quad$
- '12,000' ✓
Give the value that the arrow is pointing to.
- '5,000' ✓
Tick the sequences that go up in steps of 5,000
- 0 $\quad$ 5,000 $\quad$ 15,000 $\quad$ 25,000
- 10,000 $\quad$ 15,500 $\quad$ 20,000 $\quad$ 25,500
- 5,000 $\quad$ 10,000 $\quad$ 20,000 $\quad$ 30,000
- 15,000 $\quad$ 20,000 $\quad$ 25,000 $\quad$ 30,000 ✓

Exit quiz

What is the value of each part of this bar model?
- '50,000' ✓
Tick the equations that match this bar model.
- 2,000 × 4 = 100,000
- 2,000 × 5 = 10,000 ✓
- 2,000 + 2,000 + 2,000 + 2,000 + 2,000 = 10,000 ✓
- 100,000 ÷ 5 = 2,000
What is the value of each part in the bar model?
- '25,000' ✓
Tick the sequences that go up in steps of 25,000
- 0 $\quad$ 125,000 $\quad$ 250,000 $\quad$ 375,000
- 25,000 $\quad$ 50,000 $\quad$ 75,000 $\quad$ 90,000
- 2,500 $\quad$ 5,000 $\quad$ 7,500 $\quad$ 10,000
- 50,000 $\quad$ 75,000 $\quad$ 100,000 $\quad$ 125,000 ✓
Give the value that the arrow is pointing to.
- '75,000' ✓
Give the missing number in the sequence: 200,000 $\quad$ 225,000 $\quad$ 250,000 $\quad$ ______ $\quad$ 300,000 $\quad$
- '275,000' ✓

Worksheet

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Presentation

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Lesson Details

Key learning points

100,000 is composed of two 50,000s
100,000 is composed of four 25,000s
100,000 is composed of five 20,000s

Common misconception

Pupils misread the values of bars on each graph.

Encourage pupils to mark on as many gridlines that they can for themselves once they have recognised the size of the whole. This may then help pupils to estimate the value of each bar more accurately until they can do it by imagining the gridlines.

Keywords

Multiple - A multiple is the result of multiplying a number by an integer (not by a fraction).
Gridlines - A gridline is a horizontal or vertical line that helps organise data on a graph or chart.