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Missing Place-Value Decoder

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Missing Place-Value Decoder

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About this activity

Ten-ones missing challenge

Created by

Hidden Author
Hidden Author
Lebanon

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Missing Place-Value Decoder
 

Missing Place-Value DecoderOnline version

Ten-ones missing challenge

by Hidden Author
1

2 tens + ____ ones = 26. What number is missing?

Hints

The missing part is the ones place value.

What added to 20 makes 26?

Think about tens as 20.

2

____ tens + 4 ones = 34. What number is missing?

Hints

What number in tens plus 4 makes 34?

34 is the total.

Tens contribute tens and ones contribute ones.

3

2 tens + ____ ones = 25. What number is missing?

Hints

Focus on the ones place.

What number added to 20 makes 25?

Two tens give 20.

4

2 tens + ____ ones = 21. What number is missing?

Hints

Remember ones place value.

What single digit adds to 20 to reach 21?

Two tens equal 20.

5

____ tens + 6 ones = 26. What number is missing?

Hints

The tens value should be a single digit.

26 minus 6 equals what tens?

Think how many tens give a total near 26.

6

3 tens + ____ ones = 34. What number is missing?

Hints

Consider the ones place only.

What digit added to 30 gives 34?

Three tens equal 30.

7

____ tens + 5 ones = 25. What number is missing?

Hints

Use simple subtraction.

What tens value plus 5 equals 25?

Total is 25.

8

1 ten + ____ ones = 17. What number is missing?

Hints

Think ones place carefully.

What number added to 10 makes 17?

One ten is 10.

9

____ tens + 8 ones = 28. What number is missing?

Hints

Subtract 8 from 28 to get tens.

What tens value plus 8 equals 28?

Total is 28.

10

3 tens + ____ ones = 31. What number is missing?

Hints

Focus on the ones place.

What digit added to 30 makes 31?

Three tens equal 30.

 
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