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Numbers round and word scramble for CBSE Class 9 and 10

A low-prep end-of-term lesson: six numbers, a target and 30 seconds to reach it, then a maths word scramble. Use the generator below for as many new rounds as you like.

Level
CBSE Class 9 and 10
Time
40 minutes, plus a 10-minute extension
Topics
Number: the four operations and order of operations; Mathematical vocabulary
Equipment
No calculator. Every step is a whole number.

Download student sheet (PDF)Answers (PDF)

Suggested timings

PartTimeWhat
Starter5 minQuick questions on the board
Main: task A15 minNumbers rounds
Main: task B10 minWord scramble
Main: task C10 minSmall numbers, many targets
Extension10 minFast finishers or homework

Starter (5 minutes)

Quick mental warm-up.

  1. Work out 75 × 4.
  2. Work out 100 − 37.
  3. Work out 8 × 25.
  4. Work out 450 ÷ 9.

Main activity (35 minutes)

Task A: Numbers rounds (15 min)

Use some or all of the six numbers, each at most once, with +, −, × and ÷ to make the target. Every step must give a positive whole number. Other ways are possible.

  1. Numbers: 100, 75, 6, 3, 8, 2. Target: 512.
  2. Numbers: 50, 25, 4, 7, 9, 1. Target: 331.
  3. Numbers: 75, 10, 5, 6, 2, 3. Target: 861.
  4. Numbers: 25, 8, 9, 3, 4, 1. Target: 247.

Task B: Word scramble (10 min)

Unscramble each set of nine letters to find a maths word.

  1. Unscramble: CRANTIFOS
  2. Unscramble: GLITERANS
  3. Unscramble: DRUQATICA
  4. Unscramble: VIDLESIBI

Task C: Small numbers, many targets (10 min)

Use 1, 2, 3 and 4, each at most once, with +, −, ×, ÷ and brackets.

  1. Make 10.
  2. Make 24.
  3. Make 25.

Play more rounds

Each click makes a new round to put on the board. Every target can be made from the six numbers.

Word scramble

Unscramble the nine letters to find a maths word.

Extension (10 minutes)

For fast finishers.

  1. Using 1, 2, 3, 4 and 5 (each at most once), make 100.

For teachers

Teacher notes and full worked answers
  • How to play: put a round on the board, give 30 seconds, then ask for the closest result and the working. Exactly on target scores 10, within 5 scores 7, within 10 scores 5. Use the ‘Play more rounds’ generator on this page for as many new rounds as you like; every target it makes can be reached.
  • Word scramble: one person reads the nine letters aloud, everyone writes the maths word. Ask for a one-line definition as a tie-break.

Starter

  1. 300
    • 75 × 4 = 300
  2. 63
    • 100 − 37 = 63
  3. 200
    • 8 × 25 = 200
  4. 50
    • 450 ÷ 9 = 50

Task A: Numbers rounds

  1. 8 × (75 − 6 − 3 − 2) = 512
    • 75 − 6 − 3 − 2 = 64
    • 8 × 64 = 512
  2. (50 + 25 − 7) × (4 + 1) − 9 = 331
    • 50 + 25 − 7 = 68 and 4 + 1 = 5
    • 68 × 5 = 340, and 340 − 9 = 331
  3. (75 + 5 + 6) × 10 + 3 − 2 = 861
    • 75 + 5 + 6 = 86
    • 86 × 10 = 860, and 860 + 3 − 2 = 861
  4. (25 + 8 + 1) × (4 + 3) + 9 = 247
    • 34 × 7 = 238
    • 238 + 9 = 247

Task B: Word scramble

  1. FRACTIONS
    • Fractions: parts of a whole, like 3/4.
  2. TRIANGLES
    • Triangles: shapes with three sides.
  3. QUADRATIC
    • Quadratic: of degree 2, like x2 + 3x + 2.
  4. DIVISIBLE
    • Divisible: can be divided exactly, with no remainder.

Task C: Small numbers, many targets

  1. 1 + 2 + 3 + 4 = 10
    • Add them all.
  2. 1 × 2 × 3 × 4 = 24
    • Multiply them all.
  3. (4 + 1) × (3 + 2) = 25
    • 5 × 5 = 25

Extension

  1. (2 + 3) × 4 × 5 = 100
    • 2 + 3 = 5, and 5 × 4 × 5 = 100

The same answers are in the answers PDF. Every answer was recomputed by computer before publishing.

Practise the topics

End-of-year quiz maths · Spot the mistake relay and maths taboo maths · Maths art maths · All themed maths

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