Module 3 Calculating
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Can I use a written method to multiply?

Example review questions

  • What is 72 multiplied by 38?
    Explain how your method works.
  • Calculate 349 × 6.
  • Show me how you would calculate 417 × 20.
    Did you need to use a written method?
  • There is space in the car park for 17 rows of 32 cars. How many cars can park?
  • How many hours are there in one year?
  • How would you work out 23.8 × 8?

Teaching guidance

This teaching guidance document suggests some of the key vocabulary, models, images and practical equipment that children should experience and be able to use. It also includes some teaching tips to provide a few starting points for ways of supporting children with this area of mathematics.

PDF file Can I use a written method to multiply? - teaching guidance | 65KB new window

Consolidation and practice

These resources are to support children in guided or independent work. Roll over the highlighted resources for a description.

SWF file Multiarray ITP | 33KB new window

PDF file How to use multiplication grid ITP | 145KB new window

SWF file Multiplication grid ITP | 26KB new window

PDF file How to use multiplication board ITP | 212KB new window

SWF file Multiplication board ITP | 34KB new window

PDF file Springboard 5, Unit 10 (additional materials) Multiplication - written methods | 64KB new window

PDF file Springboard 6, Lesson 4 Using informal written methods to support, record or explain multiplications | 45KB new window

PDF file Springboard 6, Lesson 4 Resources | 21KB new window

Multiarray

itp_itp_multiplication_array.png

This interactive teaching program (ITP) is an ICT-based tool to support the exploration of multiplication. Multiarray ITP allows the child or teacher to uncover a section of an array of counters, dropping on grid lines to explore methods of multiplication.

Multiplication grid

itp_multiplication_grid.png

This interactive teaching program (ITP) is an ICT-based tool to support the exploration of multiplication. Multiplication grid ITP allows the child or teacher to demonstrate the grid method of multiplication for whole and decimal numbers. The ITP can be used to develop children's abilities to apply their knowledge of number facts and to deduce and reason, when finding missing component numbers.

Multiplication board

itp_multiplication_board.png

This interactive teaching program (ITP) is an ICT-based tool to support the exploration of multiplication and division facts. Multiplication board ITP allows the child or teacher to represent the product of two numbers as an array, displaying the product and factors.

Opportunities to use and apply

Possible contexts include:

  • Problem solving, e.g. Here is a multiplication calculation with some missing numbers.

    A multiplication calculation.

    What is the calculation? Explain how you worked it out.
  • Measurement, e.g.
    • What is the area of a field 27 metres by 35 metres?
    • I have 16 boxes each weighing 20.5 kg. What is their total weight?

Confirming learning

Ask probing questions such as:

  • How would partitioning help you calculate 237 × 6?
  • What could you do to help you calculate 2.3 × 9?
  • Show me your method for solving this problem:
    ‘What is the total mass of 235 screws each weighing 6 grams?’ What approximations could you make?
    Explain your working.
  • Create some multiplication calculations with incorrect, but reasonable answers, e.g. 34 × 51 = 1751. Ask the children to estimate roughly what the answer should be, and then identify what errors might have been made.