1. How many more stars are needed to make five tens?


  2. How many more stars are needed to make five tens?


  3. How many stars?
    1.   zero tens | two ones
    2.   one ten | twenty ones
    3.   one ten | twenty ones
    4.   two tens | zero ones
  4. How many stars?
    1.   five tens | zero ones
    2.  ten ones | five tens
    3.   four tens | zero ones
    4.   three tens | ten ones
  5. How many stars?
    1.   four tens | five ones
    2.   five ones | four tens
    3.   four tens | four ones
    4.   four ones | five tens
  6. How many stars?
    1.   four tens | four ones
    2.   two tens | two ones
    3.   two tens | four ones
    4.   four tens | two ones
  7. How many stars?
    1.   five tens | ten ones
    2.   four tens | zero ones
    3.   two tens | ten ones
    4.   four ones | no tens
  8. How many stars?
    1.   three tens | four ones
    2.   six tens | three ones
    3.   three tens | six ones
    4.   six tens | seven ones
  9. How many stars?
    1.   one ten | three ones
    2.   three tens | one one
    3.   one tens | six ones
    4.   three tens | three ones
  10. How many stars?
    1.   one ten | three ones
    2.   three tens | one one
    3.   one ten | four ones
    4.   three tens | three ones