Free worksheets · Kindergarten
Missing Addends Within 10 Worksheet
Find the missing number in each addition equation, like 2 + ? = 9, by counting up from the first number to the total.
Free printable
Missing Addends Within 10
10 questions, one page, US Letter. Print it and do it on paper.
On the sheet: Find the missing number in each addition equation. Hint: start at the first number and count up to the total. The number of counts is the missing number.
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About this worksheet
Each equation gives the first number and the total, and the box in the middle is the part to find. A child starts at the first number and counts up to the total; how many counts it takes is the missing number.
This is the first taste of the link between adding and subtracting: 2 + ? = 9 asks the same thing as 9 - 2. Counting up from a number, instead of from one, is also the habit that makes later addition quick.
A worked example
3 + ? = 7
- Start at the first number: 3.
- Count up to the total, raising a finger for each count: 4, 5, 6, 7.
- Four fingers are up, so it took 4 counts.
- Write 4 in the box. Check: 3 + 4 = 7.
Answer: 3 + 4 = 7
The common mistake
What it looks like: Writing the total, or adding the two numbers shown: 3 + 7 = 10 for the example.
Why it happens: Most addition a child has seen puts the answer after the equal sign, so a box in the middle looks like a place to add.
How to fix it: Read it aloud as a question: "3 and how many more make 7?" Then count up from 3 and stop at 7.
Ten minutes a day, on paper. We plan what comes next.
A printed page and a pencil. No screen, no login for your child. Snap a photo when they’re done: AI scores it, and what they missed comes back on the sheets that follow.
- Mon Missing Addends Within 10
- Tue What they missed, back again
- Wed The next step, when they’re ready
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