🧮 Missing Factors

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Solve each problem. Show your working if you need to.

1.8 × ___ = 80

2.24 ÷ ___ = 3

3.9 × ___ = 90

4.20 ÷ ___ = 4

5.3 × ___ = 18

6.20 ÷ ___ = 2

7.10 × ___ = 20

8.54 ÷ ___ = 6

9.4 × ___ = 12

10.60 ÷ ___ = 10

11.5 × ___ = 40

12.16 ÷ ___ = 4

13.8 × ___ = 80

14.60 ÷ ___ = 6

15.7 × ___ = 35

16.35 ÷ ___ = 7

17.3 × ___ = 24

18.25 ÷ ___ = 5

19.7 × ___ = 35

20.36 ÷ ___ = 9

Answer key: 1. 10 · 2. 8 · 3. 10 · 4. 5 · 5. 6 · 6. 10 · 7. 2 · 8. 9 · 9. 3 · 10. 6 · 11. 8 · 12. 4 · 13. 10 · 14. 10 · 15. 5 · 16. 5 · 17. 8 · 18. 5 · 19. 5 · 20. 4

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Worksheets › Grade 3 › Numbers & maths

Grade 3 (ages 8–9)Numbers & mathsFree printable PDF

About this grade 3 worksheet

Free 3rd grade worksheet: find the unknown number in multiplication and division equations like 6 × ? = 42. Answer key included. Skill: Finding unknown factors. Level: Grade 3 — also suits Year 4 (UK).

For teachers: skills & standards

CCSS 3.OA.A.4: Find the unknown number in multiplication or division equations
Works as a morning-work page, a centre/station activity, homework or an early-finisher task.

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What age is it for?

It is designed for Grade 3 (ages 8–9), but use it with any child who is ready.

What skills does it build?

Finding unknown factors.

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Pagine's free library has 20,000+ children's books you can read in the Pagine e-reader or the free Pagine app — sorted by age and grade, with free audiobooks too.

More numbers & maths worksheets

Number Tracing 0–10 · Number 1 Worksheet: Trace, Count & Colour · Number 2 Worksheet: Trace, Count & Colour · Number 3 Worksheet: Trace, Count & Colour · Number 4 Worksheet: Trace, Count & Colour · Number 5 Worksheet: Trace, Count & Colour · Number 6 Worksheet: Trace, Count & Colour · Number 7 Worksheet: Trace, Count & Colour · Number 8 Worksheet: Trace, Count & Colour · Number 9 Worksheet: Trace, Count & Colour

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