Lesson Worksheet: Subtracting by Breaking Apart Ones Mathematics • 2nd Grade
In this worksheet, we will practice subtracting a 1-digit number from a 2-digit number by breaking apart ones and modeling this with equations.
Q1:
Help James take away 7 from 24 by breaking apart ones.
First, take away the 4 ones:
.
We need to take away 7, how many more should we take away?
Take away the remaining ones:
.
Q2:
If you know that , find .
Q3:
Use the given model to solve .
Q4:
Fill in the blanks in the following equation: .
- A5, 2
- B5, 7
- C30, 2
- D2, 30
Q5:
Benjamin wants to solve , so he breaks apart 9, as shown.
Help Benjamin find the missing numbers in .
- A3, 9
- B5, 4
- C4, 5
- D9, 5
What is the final result that Benjamin will get?
Q6:
What is ?
Hint: Break apart 5 using the given part-whole model to help you.
Q7:
Complete the following: .
- A2, 37
- B3, 37
- C2, 38
- D7, 38
Q8:
Which of the following equations can help you solve ?
- A
- B
- C
- D
What is the final result?
Q9:
Find the missing number in the given model.
Q10:
Scarlett explains her method to find with a 100 square.
Using the same method, find .
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