A method using columns to set out and calculate a multiplication is short multiplication.

The process of unitising and exchanging between place values is known as regrouping.

Multiply a 2-digit number by a 1-digit number using short multiplication (regrouping 10s to 100s)

Maths

In this unit pupils will multiply a 2-digit number by a single-digit number using partitioning and representations using expanded multiplication and using short multiplication. In the future unit pupils will multiply a 3-digit number by a single-digit number using expanded and short multiplication.

In the prior unit pupils explained the relationship between multiplying and dividing a number by 10 and multiples of 10. In this unit pupils will multiply a 2-digit number by a single-digit number using partitioning and representations using expanded multiplication and using short multiplication.

Multiplication by partitioning leading to short multiplication (2 by 1-digit)

Select the correct short multiplication for this representation.

Which short multiplication is correct for: 52 × 3 =

Look at the short multiplication. True or false: You will need to regroup in the 10s.

The product is 205 which is the correct short multiplication?

Lucas is chanting his 5 times tables: 5, 10, 15, ___. What comes next?

Lucas is chanting his 5 times tables in descending order: 60, 55, 50, {{ }}. What comes next?

Use short multiplication to calculate this question: 37 × 2 = {{  }}

Calculate and sort the multiplication equations into descending order.

Use short multiplication to solve this question: Jacob has 29 packets of sweets. Each packet has 3 sweets. How many sweets does her have altogether? 

This lesson will soon be taken down.

Multiply a 2-digit number by a 1-digit number using short multiplication (regrouping 10s to 100s)

Lesson outcome