Place value

What's the number?

• 33

• 44

• 23

• 50

How many tens in 45?

• 1

• 4

• 5

• 9

how many ones in 28?

• 2

• 4

• 6

• 8

How many?

• 1 ten and 5 ones

• 1 ten and 1 ones

• 1 tens 9 ones

• 5 tens 0 ones

This is

• 21

• 15

• 35

• 80

This is

• 10

• 12

• 19

• 14

Which one is same as 16?

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• 
• 
• 

What's the number?

• 23

• 20

• 5

• 3

Which abacus shows the number 32?

• 
• 
• 
• 

A number with 2 tens and 5 ones is ...

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• 
• 
•