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.