Place Value: Tens and Ones — Answer Key
Part A: Fill in the Blank
Write the missing word or number on each line.
1. 72 = 7 tens and 2 ones.
In 72, the digit 7 is in the tens place, so there are 7 tens. The 2 is in the ones place.
2. 38 = 30 + 8.
In expanded form, 38 is broken into 30 (3 tens) and 8 (8 ones). So 38 = 30 + 8.
3. The digit 5 in 54 has a value of 50.
The digit 5 is in the tens place in 54, so its value is 5 × 10 = 50.
4. 6 tens and 3 ones = 63.
6 tens equal 60 and 3 ones equal 3. Adding them gives 60 + 3 = 63.
5. 47 = 40 + 7.
40 is 4 tens and 7 is 7 ones. Adding them gives 40 + 7 = 47.
6. The ones digit in 89 is 9.
The ones digit is the last digit in a number. In 89, the ones digit is 9.
7. 95 = 90 + 5.
In expanded form, 95 is broken into 90 (9 tens) and 5 (5 ones). So 95 = 90 + 5.
8. 3 tens and 0 ones = 30.
3 tens equal 30 and 0 ones equal 0. Adding them gives 30 + 0 = 30.
9. In the number 16, the 1 stands for 10.
The digit 1 is in the tens place in 16, so it stands for 1 × 10 = 10.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
34
→ 30 + 4
20 + 6
71
→ 70 + 1
50 + 8
58
→ 50 + 8
30 + 4
26
→ 20 + 6
70 + 1
Each two-digit number can be written in expanded form by separating the tens and ones. 34 = 30 + 4, 71 = 70 + 1, 58 = 50 + 8, and 26 = 20 + 6.