Make 1,000 Worksheets for 3rd Grade
Find how many more it takes to reach 1,000, like 620 + __ = 1000. 15 free printable worksheets, each with an answer key.
Save to PinterestFree Make 1,000 Worksheets
Click a worksheet to open the PDF, or grab the matching answer key. Every sheet prints on one page.
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Make 1,000: what children learn
Making 1,000 is a mental-math skill: 620 needs 380 more because 620 + 80 = 700 and 700 + 300 = 1000. Finding the next hundred first keeps the counting easy.
Make 1,000: worked example
620 + __ = 1000 380
620 + 80 = 700. 700 + 300 = 1000. 80 + 300 = 380.
Make 1,000: a common mistake to watch for
Kids sometimes stop at the next hundred instead of going all the way to 1,000.
Make 1,000: how to help at home or in class
Draw a long number line from 0 to 1,000 with a tick at every hundred. Pick a number such as 350, have your child hop to the next hundred, then hop from there to 1,000, saying both jumps out loud and adding them together. Fade the line over a week until the hops happen in the head. Mental jumping like this is what makes subtracting from 1,000 feel easy afterwards.
What is on these Make 1,000 worksheets
This set has 15 different worksheets for 3rd grade, with 16 questions on each and a matching answer key for every sheet. The instruction printed on each worksheet is: “Find the missing number to make 1,000.”
Example questions like the ones on these worksheets, with their answers:
- 604 + __ = 1000396
- 478 + __ = 1000522
- 898 + __ = 1000102
- 781 + __ = 1000219
- 819 + __ = 1000181
- 414 + __ = 1000586
- 426 + __ = 1000574
- 960 + __ = 100040
Every answer on every sheet is checked by a separate program before the worksheet is published. How we check answers