We can write number sentences from word problems using the important information within the word problem. The key is to think about the maths involved-whether it is addition, subtraction, multiplication or division.

In this video we work through how to form our number sentences and how to solve them.

Example Questions:

question 1

There were $11$11 flowers in Dave’s garden. $4$4 more flowers grew, then Dave picked $8$8 flowers to put in a vase.

Which expression matches the word problem for the number of flowers left in the garden?

$11+4-8$11+4−8

A

$11-4-8$11−4−8

B

$11-4+8$11−4+8

C

$11+4+8$11+4+8

D

question 2

Sarah had $21$21 students in her class. Over the summer vacation $6$6 left the class, and when she returned there were $4$4 new students in her class.

Write a number sentence for the total amount of students in Sarah's class now.

question 3

Xanthe has saved $\$137$$137 over the course of the year. She earns $\$14$$14 this week from doing chores, but spends $\$42$$42.

Write a number sentence to find the amount of money Xanthe now has in total.