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Grade 3 Mental Maths Worksheets — Mixed +, − and ×

Grade 3 is the year multiplication joins the mental toolkit, and the real skill becomes switching between operations without losing pace. Times Table Facts leads the Grade 3 set and seven more skills sit beside it — adding and taking away in your head, number bonds, doubles and halves, near doubles, adding 9 and 11, and Mixed Chains, the sheet where the operations meet and every line asks a child to read the symbol first and then choose the strategy.

On Times Table Facts the three levels run straight recall, then the missing factor, then three numbers multiplied at once, all inside the tables to 10. Mixed Chains opens with add-and-take-away and then puts a product first, as in 7 × 6 + 24. No calculator, no written working: pick a skill, set the count, tick the answer key, and print.

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Mental Maths · Grade 3

Grade
Topic
SkillEach skill is a different kind of question, with its own levels.
Level
Questions
30

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Grade 3 · 2 pages · A4

Mental Maths Practice

Grade 3 • Times Table Facts • Missing factor
Name:Date:

Write the missing number in each question. No calculator.

  1. 1) ___ × 5 = 40
  2. 2) ___ × 2 = 20
  3. 3) ___ × 5 = 35
  1. 4) ___ × 5 = 20
  2. 5) ___ × 7 = 28
  3. 6) ___ × 8 = 32
  1. 7) ___ × 2 = 8
  2. 8) 8 × ___ = 72
  3. 9) ___ × 2 = 14
  1. 10) 5 × ___ = 20
  2. 11) ___ × 6 = 48
  3. 12) 8 × ___ = 56
  1. 13) 8 × ___ = 48
  2. 14) 2 × ___ = 10
  3. 15) 4 × ___ = 28
  1. 16) ___ × 8 = 56
  2. 17) ___ × 8 = 40
  3. 18) 7 × ___ = 21
  1. 19) 7 × ___ = 49
  2. 20) ___ × 10 = 80
  3. 21) ___ × 3 = 21
  1. 22) ___ × 9 = 27
  2. 23) 5 × ___ = 10
  3. 24) ___ × 10 = 90
  1. 25) ___ × 2 = 16
  2. 26) ___ × 4 = 36
  3. 27) ___ × 7 = 49
  1. 28) 5 × ___ = 30
  2. 29) 4 × ___ = 12
  3. 30) 6 × ___ = 60
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Page 1 of 2

Answer Key

  1. 1. 8
  2. 2. 10
  3. 3. 7
  4. 4. 4
  1. 5. 4
  2. 6. 4
  3. 7. 4
  4. 8. 9
  1. 9. 7
  2. 10. 4
  3. 11. 8
  4. 12. 7
  1. 13. 6
  2. 14. 5
  3. 15. 7
  4. 16. 7
  1. 17. 5
  2. 18. 3
  3. 19. 7
  4. 20. 8
  1. 21. 7
  2. 22. 3
  3. 23. 2
  4. 24. 9
  1. 25. 8
  2. 26. 9
  3. 27. 7
  4. 28. 6
  1. 29. 3
  2. 30. 10
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Page 2 of 2

More Grade 3 mental maths skills

Each one generates a different kind of question, with its own three levels and answer key.

What each level generates

Grade 3 times table facts — the exact skill behind each difficulty setting, straight from the generator.

  1. Level 1Table facts
  2. Level 2Missing factor
  3. Level 3Three factors

Grade levels follow the progression common to most English-language curricula — not one specific national curriculum. Every level shows exactly what it generates, so you can check the fit with your own program. See the full scope & sequence →

What Grade 3 mental maths should cover

Three things define Grade 3 fluency: addition and subtraction within 100 done reliably in the head, the times tables becoming automatic rather than skip-counted, and the ability to move between operations on the same page. The Mixed Chains sheet targets the third of those directly, because a child who scores well on a page of pure multiplication can still stumble when a subtraction appears straight after a product.

Watch for the classic Grade 3 error: reading the symbol after starting the calculation. If a child answers 8 × 7 with 15, the tables are fine and the scanning is not. Slowing the first five questions down and pointing at the symbol before speaking usually fixes it within a couple of sheets.

Making the tables automatic

Skip-counting is a stepping stone, not a destination — a child who reaches 7 × 8 by chanting sevens is not yet fluent. Anchor facts do the heavy lifting: the tens, fives and doubles come first, then everything else is one step away. 7 × 8 is 7 × 4 doubled; 6 × 9 is 6 × 10 minus 6; 12 × 7 is 10 × 7 plus 2 × 7. Teach the anchors, then use the Mixed Chains sheet to check the facts survive outside a tables-only page.

Its middle level puts a product first and then adds or takes away, which is the first taste of holding an intermediate result. Keep those sheets to fifteen or twenty questions and expect them to take roughly twice as long per item — the thinking, not the arithmetic, is what is being stretched.

Frequently asked questions

▸What is mental maths for Grade 3?

Working out addition, subtraction and multiplication in the head. Each skill has a sheet of its own, and the Mixed Chains sheet rotates the three operations so a child practises choosing a strategy, not just repeating one.

▸Should my child know all the times tables by Grade 3?

Most Grade 3 programmes aim for the tables up to 10 by the end of the year, with 11 and 12 following. Times Table Facts keeps to the tables up to 10 at every Grade 3 level — straight recall, then the missing factor, then three factors — and the Grade 4 sheets extend to 12.

▸Why practise mixed operations as well as one skill at a time?

Because switching is the skill that transfers. A single-operation page lets a child answer on autopilot; the Mixed Chains sheet forces them to read the symbol and pick a method, which is what any real problem will demand of them. Use both — one skill at a time to build the facts, mixed chains to prove they hold.

▸What does the Mixed Chains sheet generate?

Chains that mix operations: 54 + 32 − 75 at the first level, 7 × 6 + 24 at the second, and four numbers in a row at the third. The multiplication always comes first so the answer is never ambiguous, and every result stays a positive whole number.

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