2.5 Multiplication & Division Facts

Unit Objectives

• We are learning to see how multiplication and division are connected, and to know our multiplication and division facts.

Success Criteria

• I can use an array to show a multiplication fact and the division facts hidden inside it.

• I can use patterns and strategies (like doubling and the near-ten trick) to work out my times tables facts.

• I can use my number facts to solve word problems.

Learning Objective

• To use arrays to show how multiplication and division are connected.

Success Criteria

• I can build an array to represent a multiplication fact.

• I can write the two multiplication facts and two division facts that belong to the same array (a fact family).

• I can explain why multiplication and division are inverse (opposite) operations.

Follow along to write notes to help you remember what you've learned.

LI: To use arrays to show how multiplication and division are connected.

Worked Example with a number line.

Guided Practice

Learning Objective

• To use strategies to work out multiplication facts we don't have memorised yet.

Success Criteria

• I can use doubling to work out ×4 facts from ×2 facts.

• I can use the near-ten strategy to work out ×9 facts (e.g. ×10, then subtract one group).

• I can build ×6 facts by doubling ×3 facts.

The 9 near 10 strategy 

Often called the use-tens strategy is a mental math shortcut for multiplication. 

Since 9 is just (10 - 1),
you multiply by 10 instead and subtract the original number.

To multiply any number by 9:

1. Multiply the number by 10 (add a zero to the end).

2. Subtract the original number from that result.