Subtract 3-Digit Numbers — Missing Number Worksheets for 2nd Grade
Find the missing number when subtracting two 3-digit numbers. 15 free printable worksheets, each with an answer key.
Save to PinterestFree Subtract 3-Digit Numbers — Missing Number Worksheets
Click a worksheet to open the PDF, or grab the matching answer key. Every sheet prints on one page.
Worksheet #1
Worksheet #2
Worksheet #3
Worksheet #4
Worksheet #5
Worksheet #6
Worksheet #7
Worksheet #8
Worksheet #9
Worksheet #10
Worksheet #11
Worksheet #12
Worksheet #13
Worksheet #14
Worksheet #15
Subtract 3-Digit Numbers — Missing Number: what children learn
Missing-number subtraction works like the two-digit version: add the parts to check. If 645 minus a number is 312, then 312 + 333 = 645.
Subtract 3-Digit Numbers — Missing Number: worked example
645 - __ = 312 333
312 + 333 = 645, so the missing number is 333.
Subtract 3-Digit Numbers — Missing Number: a common mistake to watch for
Kids sometimes add the numbers they see instead of working backward.
Subtract 3-Digit Numbers — Missing Number: how to help at home or in class
Draw a bar model: a long bar for the whole total, split into two parts, one labeled with its number and the other with a question mark. Ask your child to point at which number goes on top before choosing an operation. Drawing roughly to scale also shows whether an answer is reasonable, since the missing part should be smaller than the total. When they can draw and solve alone, they are ready for mixed adding and subtracting.
What is on these Subtract 3-Digit Numbers — Missing Number worksheets
This set has 15 different worksheets for 2nd grade, with 12 questions on each and a matching answer key for every sheet. The instruction printed on each worksheet is: “Find the missing number in each subtraction problem.”
Example questions like the ones on these worksheets, with their answers:
- __ - 177 = 250427
- 730 - __ = 99631
- __ - 390 = 200590
- 246 - __ = 41205
- __ - 240 = 97337
- 481 - __ = 248233
- 219 - __ = 65154
- __ - 329 = 215544
Every answer on every sheet is checked by a separate program before the worksheet is published. How we check answers