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Worksheet: Using Place Value to Add Tens to Two-Digit Numbers

Q1:

Elizabeth is making a road with red blocks and blue blocks. She needs 52 blocks altogether.

Which group of red and blue blocks will make 52?

  • A
  • B
  • C

Q2:

Eric and Dana are making a bridge out of blocks. They choose 23 green blocks and 30 red blocks. How many blocks do they use altogether?

Q3:

What is the missing number?

  • A40
  • B20
  • C30

Q4:

Which number is missing?

  • A10
  • B9
  • C1

Q5:

All the robots have been working hard to make new numbers. Which multiple of 10 have they added?

  • A40
  • B30
  • C50

Q6:

23 children from Class A joined 30 children from Class F. How many children were there altogether?

Q7:

Which number is missing?

Q8:

Complete the number sentence: .