Subtracting With Groups of Tens

• 1 Ten  
  4 Ones
• 1 Ten
  8 Ones
• 4 Tens
  1 One
• 3 Tens
  4 Ones

• 2 Tens 
  5 Ones
• 2 Tens
  0 Ones
• 2 Tens
  3 Ones
• 3 Tens
  2 Ones

• 1 Ten
  6 Ones
• 1 Ten
  3 Ones
• 6 Tens
  1 One
• 3 Tens
  4 Ones

• 27
• 28
• 17
• 18

John has 25 stickers. He gives 13 stickers to Sarah. How many stickers does John have left?

• 12: 1 ten and 2 ones

• 38: 20 tens and 18 ones

• 13: 13 ones

• 20
• 10
• 30
• 0

Fill in the missing number in the pattern: 55, 45, 35, ______, 15.

• 30

• 25

• 20

• 3 Ten

  3 Ones

• 0 Ten

  5 Ones

• 3 Tens

  5 Ones

• 5 Tens

  3 Ones

• 3 Ten
  3 Ones
• 0 Ten
  5 Ones
• 3 Tens
  5 Ones
• 5 Tens
  3 Ones

80-10=

• 17

• 70

• 19

• 90