1st Grade Tens and Ones Worksheet Solutions (PDF)
This grade 1 place value answers for 1st Grade covers tens and ones (Common Core 1.NBT.B.2a, 1.NBT.B.2b, 1.NBT.B.2c), with a free PDF to print.
Grade 1 · Common Core State Standards: 1.NBT.B.2a, 1.NBT.B.2b, 1.NBT.B.2c
Grade 1 place value answers: exercises 1 to 10
Exercise 1 – Make a ten
The 10 cubes make one group. That group is 1 ten, with 0 ones left over.
1 ten and 0 ones.
Exercise 2 – Ones to a ten
10 ones are one bundle. 10 ones make 1 ten.
Exercise 3 – Teen number from a frame
The first frame is full: 1 ten. The second frame has 3 dots: 3 ones.
13 is 1 ten and 3 ones.
Exercise 4 – Build a teen number
1 ten is 10. Add 7 ones: \(10 + 7 = 17\). 17
Exercise 5 – Break apart a teen
The tens digit of 19 is 1. The ones digit is 9. 19 is 1 ten and 9 ones.
Exercise 6 – Count the blocks (a)
There are 3 rods and 5 cubes.
Tens digit 3, ones digit 5. 35
Exercise 7 – Count the blocks (b)
There are 6 rods and 2 cubes. Tens digit 6, ones digit 2. 6 tens, 2 ones, the number is 62.
Exercise 8 – Tens and ones to a number
Tens digit 4, ones digit 8. 48
Exercise 9 – Number to tens and ones
The tens digit is 7 and the ones digit is 3. 73 is 7 tens and 3 ones.
Exercise 10 – Counting by tens
5 tens is 10, 20, 30, 40, 50. There are 0 ones.
50
Exercises 11 and up
Exercise 11 – How many tens?
80 is 8 tens and 0 ones. 8 tens, 0 ones.
Exercise 12 – Tens equal a number
Count by tens: 10, 20, 30. 3 tens = 30.
Exercise 13 – What does the digit stand for? (a)
The 5 is in the tens place, so it stands for 5 tens, which is 50.
The 5 stands for 5 tens (50).
Exercise 14 – What does the digit stand for? (b)
The 4 is in the ones place. It stands for 4 ones.
Exercise 15 – Which number is it?
2 tens and 9 ones: tens digit 2, ones digit 9. 29
Exercise 16 – Switched digits
Diego: tens digit 8, ones digit 3, so 83. Mei: tens digit 3, ones digit 8, so 38. Diego 83, Mei 38.
Exercise 17 – Add the tens and the ones
6 tens and 3 ones. \(60 + 3 = 63\). 63
Exercise 18 – Missing ones
52 is 5 tens and 2 ones, so it is 50 and 2. 52 = 50 + 2
Exercise 19 – Bags of stickers
4 full bags are 4 tens. The 6 loose stickers are 6 ones.
Noah has 46 stickers.
Exercise 20 – Craft sticks
7 tens is 70, and there are 0 ones. Liam has 70 craft sticks.
Exercise 21 – Full groups of ten
58 is 5 tens and 8 ones. 5 full groups of ten, and 8 apples left over.
Exercise 22 – Which number is right?
No. 6 tens is 60, and the zero shows 0 ones. The number 6 would be only 6 ones. Mei is not right. The number is 60.
Exercise 23 – Marbles in a jar
He counted 6 tens, so 60. Then 3 more ones. \(60 + 3 = 63\). 63 marbles: 6 tens and 3 ones.
Exercise 24 – Teen number story
1 ten and 5 ones is 15, not 51. 51 is 5 tens and 1 one. Sofia is not right. The number is 15.
Key facts behind this grade 1 place value answers
- 10 ones make 1 ten.
- The numbers 11 to 19 are 1 ten and some ones.
- In a two-digit number, the left digit counts tens and the right digit counts ones.
- The numbers 10, 20, 30 up to 90 are 1 to 9 tens and 0 ones.
- 47 and 74 are different numbers because their digits are in different places.
How to use this grade 1 place value answers
Cover each solution, solve the exercise again, then uncover it and compare every line. If your answer differs, find the first step that changed and redo the exercise from there.
Download the grade 1 place value answers as a PDF with the button below and keep it with your notes.
All Grade 1 chapters: Grade 1 math.
