Place Value: Tens and Ones — Answer Key
Part A: Tens and Ones
Write the missing number on each line.
1. The number 13 has 1 ten(s).
In 13, the tens digit is 1 and the ones digit is 3.
2. The number 13 has 3 one(s).
In 13, the tens digit is 1 and the ones digit is 3.
3. The number 25 has 2 ten(s).
In 25, the tens digit is 2 and the ones digit is 5.
4. The number 25 has 5 one(s).
In 25, the tens digit is 2 and the ones digit is 5.
5. 3 tens and 4 ones = 34.
3 tens = 3 x 10 = 30, plus 4 ones = 34.
6. 1 ten and 8 ones = 18.
1 ten = 1 x 10 = 10, plus 8 ones = 18.
7. 4 tens and 0 ones = 40.
4 tens = 4 x 10 = 40, plus 0 ones = 40.
8. 2 tens and 7 ones = 27.
2 tens = 2 x 10 = 20, plus 7 ones = 27.
Part B: True or False
Read each sentence. Circle True or False.
1. The number 14 has 4 tens.
True False
False — 14 has 1 ten, not 4. The digit 4 is in the ones place.
2. The number 30 has 0 ones.
True False
True — 30 has 3 tens and 0 ones.
3. 2 tens and 5 ones make 25.
True False
True — 2 tens = 20 and 5 ones = 5, so 20 + 5 = 25.
4. The tens digit in 47 is 7.
True False
False — the tens digit in 47 is 4, not 7. The digit 7 is in the ones place.
5. The number 19 has 1 ten and 9 ones.
True False
True — 19 has 1 ten and 9 ones.