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P. 40
2-Digit numbers

34 means 3 tens and 4 ones.
Read it as thirty-four.

34

3 tens 4 ones
3 tens = 30 4 ones = 4

Example 1 Look at the numbers in the . Write the numbers in the .

⑴ 7 tens ones

72

⑵ tens ones

35

⑶ tens ones

97

4. True-False 2-digits 37
   35   36   37   38   39   40   41   42   43   44   45