Lesson Worksheet: Ten More and Ten Less: Numbers up to 100 Mathematics • 1st Grade
In this worksheet, we will practice finding ten more or ten less than any number up to 100 and investigating how the number of tens and the number of ones change.
Q1:
Find 10 more than 20. Use the base ten blocks to help you.
Q2:
Find the two-digit number and then find 10 more.
Which picture shows 26?
- A
- B
- C
Now, find 10 more than 26.
Q3:
We can use number bonds to ten to help us find 10 more than any tens number.
If we know that , we also know that .
We have just made the numbers bigger by 10.
Use number bonds to help you find 10 more than 80.
Q4:
Jacob writes the number 87 on his chart.
If he finds 10 less, what will happen in each column?
- AThe ones will go down by 1. The tens will stay the same.
- BThe tens will go down by 1. The ones will stay the same.
Now, find 10 less than 87. What will the new number be?
Q6:
Find 10 more than 89: .
Q7:
Find 10 less than 50. Use the base ten blocks to help you.
Q8:
Find the picture that shows 10 less than 38.
- A
- B
- C
Q9:
Fill in the blank: .
Q10:
Fill in the blank: .
Q11:
What number is missing?
Q13:
We can use number bonds to ten to help us find 10 more than any tens number.
If we know that , we also know that .
We have just made the numbers 10 times bigger.
Use number bonds to help you find 10 more than 60.
Q14:
Elizabeth writes the number 63 on her chart.
If she adds 10 more, what will happen in each column?
- AThe ones will go up by 1. The tens will stay the same.
- BThe tens will go up by 1. The ones will stay the same.
Now, add 10 more to 63. What will the new number be?
Q16:
49 is 10 less than .
Q17:
Find the missing label.
Number | 10 More | |
---|---|---|
3 | 13 | 23 |
- A10 More
- B10
- C10 Less
Q18:
Which number is NOT 10 less than 65?
- A55
- B75
Q19:
Which number is NOT 10 more than 32?
- A22
- B42
Q20:
Let us think about finding 10 less.
Which picture shows 37?
- A
- B
- C
Now, find 10 less than 37.
Q22:
Find the missing label.
10 Less | Number | |
---|---|---|
19 | 29 | 39 |
- A10 Less
- B10
- C10 More
Q23:
94 is ten more than .
Q25:
Ten less than 85 is .