Composition of 100 in 10s and 1s | Maths | Quizalize & Oak National Academy

Starter quiz

What number is being represented here?

40

50 ✓

60

70
Finish the sentence. One ten is equal to __________.

20

10 ones ✓

1 one

1
What is four groups of 10?

4

14

40 ✓
Match the number of tens to the numeral with the same value.

2 tens

⇔

20 ✓

5 tens

⇔

50 ✓

9 tens

⇔

90 ✓

10 tens

⇔

100 ✓
What is ten more than 50?

40

60 ✓

70
Complete the equation: 6 = 10 − ______

'4' ✓

What numeral represents this base ten block?

100 ✓

10

1
What amount is not equivalent to these 10 p pieces?

10 p ✓

100 p

one pound
Match the multiples to the equivalent number of tens.

60

⇔

6 tens ✓

80

⇔

8 tens ✓

100

⇔

10 tens ✓

70

⇔

7 tens ✓

90

⇔

9 tens ✓
Complete the equation 100 x ______ = 100.

'1' ✓
How many equal parts has this hundred square been divided into?

10 ✓

20

100
Which of the equations match the bar model?

100 = 10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 ✓

100 = 10 x 10 ✓

100 x 1 = 100

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Pupils do not identify that ten tens are equal to 100 and cannot decompose 100 in this way.

Base ten blocks or a bead string are useful tools to allow pupils to compose and decompose 100 into equal groups of ten.