Level 3 · Mathematics M3.2

Long multiplication and division

Multiply and divide big numbers on paper, and check answers with estimates.

Multiply and divide in your head, then on paper with the grid method, long multiplication, short division and long division. Learn the order of operations, check answers with estimates, and choose the right operation for a problem.

Start readingM3.2.1 Multiplying and dividing in your head

8 chapters. Your place is kept on this device only.

You are ready for this book if

You can work out 23 × 4 and 84 ÷ 4 on paper.

Contents

  1. 1Multiplying and dividing in your head, readunderstood
  2. 2Short multiplication, readunderstood
  3. 3Long multiplication, readunderstood
  4. 4Short division, readunderstood
  5. 5Long division, readunderstood
  6. 6Order of operations, readunderstood
  7. 7Estimate, then check, readunderstood
  8. 8Choosing what to do, readunderstood

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For parents and teachers

For learners who can work out 23 × 4 and 84 ÷ 4 on paper and know the times tables. In many schools this fits children of about 11 to 13, and older learners who never learned the written methods can start here too. Each chapter takes one or two short sessions. A learner can work alone: every exercise has its answer and the reason for it. Each chapter also has a page for the adult, with three questions to ask.

Strand: Calculation. Written and drawn by attnom. Free to read, print and share.