Missing number problems (age 7+)
Solve addition and subtraction problems including missing-number problems, using number facts, place value, and more complex methods
Teaching approaches
Gakuva’s recommended starting approach is selected. You can still compare every option.
1 approach
Can your child work out sums with a hidden number — like '? − 38 = 24' or '53 + ? = 91' — by thinking carefully about what the equation is asking?
Solve addition and subtraction problems including missing-number problems, using number facts, place value, and more complex methods
Keep a record of your learning
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Learning resources
Reviewed external links that reinforce this concept. They do not replace Gakuva’s teaching approach.
Missing Addend — foundational single-digit warm-up
Choose the missing number in a single-digit addition equation and check the game's feedback. Use this as a warm-up before harder missing-number problems.
Proof: Foundational supplementary practice only; not coverage of the three-digit/multi-step Missing number problems target. Parent prompt: “What number makes this equation true? Can you use subtraction to check it? Tell me how you know.”
Explore the learning path
2 before · 2 after
This concept
Check understanding
- Solve a missing-number problem such as 245 + ? = 380
- Choose an appropriate method (mental, written, or combination) based on the numbers
- Solve multi-step problems combining addition and subtraction of three-digit numbers
“Can your child work out sums with a hidden number — like '? − 38 = 24' or '53 + ? = 91' — by thinking carefully about what the equation is asking?”
Curriculum record
- Type
- Procedural
- Subject
- Mathematics
- Domain
- Addition & Subtraction
- Age range
- Ages 7–8
Standards