Year 4 Short Multiplication and Short Division: lesson and practice

By the end of this chapter you will be able to

• Multiply and divide whole numbers by 10 and 100 by moving the digits, not by “adding a zero”
• Multiply a two-digit or three-digit number by a one-digit number using partitioning, the grid method and the distributive law
• Use the expanded column method, then short multiplication with carrying
• Divide using place value and known facts, then use short division (the bus stop method) for 2-digit and 3-digit numbers
• Work out and use remainders, and decide what a remainder means in a story
• Solve scaling problems (“4 times as many”) and correspondence problems (3 hats and 5 tops make 15 outfits)
• Multiply three numbers, and solve word problems using bar models

You should already know

• Times tables up to 12 × 12 and the matching division facts (Chapter 3)
• Place value in numbers up to 10,000 (Chapter 1)
• Column addition with carrying (Chapter 2)
• Multiplying by 10 in the 10 times table, and using known facts like 6 × 7 = 42 to work out 60 × 7

Where this leads

• Fractions of amounts and dividing quantities (Chapter 5)
• Money, decimals, and dividing by 10 and 100 to make decimals (Chapter 6)
• Perimeter and area (Chapter 7)
• Long multiplication and long division in Years 5 and 6
• Multiplying and dividing by 1,000 in Year 5