Place Value (Tens and Ones) — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. Which number has 9 tens and 0 ones?
A) 9
B) 19
C) 90
D) 99
9 tens equals 90 and 0 ones adds nothing extra, so 90 + 0 = 90 with a 9 in the tens place and 0 in the ones place.
2. What is 50 + 3 written as a number?
A) 503
B) 35
C) 53
D) 530
50 is 5 tens and 3 is 3 ones, so writing them together as one number gives 53.
3. In the number 68, which digit is in the tens place?
A) 8
B) 6
C) 68
D) 86
The tens place is the digit on the left in a two-digit number, and in 68 that is the 6, which stands for 60.
4. Which shows the expanded form of 41?
A) 4 + 1
B) 40 + 1
C) 41 + 0
D) 14 + 0
Expanded form splits 41 into its place values: the 4 is worth 40 (tens) and the 1 is worth 1 (ones), giving 40 + 1.
Part B: Fill in the Blank
Write the correct answer on each line.
1. The expanded form of 86 is 80 + 6.
In 86, the 8 is worth 80 and the 6 is worth 6, so the expanded form is 80 + 6.
2. If you take away 1 ten from 52, you get 42.
Taking away 1 ten means subtracting 10, so 52 - 10 = 42 — the tens digit drops from 5 to 4 while ones stay at 2.
3. The value of the 7 in 73 is 70.
The 7 in 73 sits in the tens place, so its value is 7 tens, which equals 70.
4. 60 + 4 = 64.
Since 64 has 6 tens and 4 ones, the tens part is 60, and 60 + 4 = 64.
5. A number with 0 tens and 8 ones is 8.
With 0 tens, there is nothing in the tens place, so the number is just the 8 ones — a one-digit number 8.