How can my child practise perimeter at home?

Work through the examples below, then start a free adaptive session. Northstar adjusts the difficulty automatically and tracks mastery over time.

Perimeter (Year 4)

Calculate the perimeter of 2D shapes by adding side lengths.

The questions below are generated to match the National Curriculum for Year 4 and get harder as you progress from Rookie to Guru.

RookieRead and interpret directly.

How many minutes is 2 hours and 30 minutes?

Answer: 150 minutes. 2 × 60 + 30 = 150 minutes.

ProCompare and infer.

Tom's school day starts at 08:50 and ends at 15:20. How LONG is his school day?

Answer: 6 hours 30 minutes. From 08:50 to 15:20: 6 hours + 30 minutes.

GuruMulti-step reasoning.

A pupil reads a clock showing 14:50 and writes '4:50 PM'. Find the mistake.

After 12:00, subtract 12 to get the PM hour. 14 − 12 = 2, so 14:50 = 2:50 PM, not 4:50 PM.
There is no mistake.
Should be 14:50 PM.
Should be 14:50 AM.

Answer: After 12:00, subtract 12 to get the PM hour. 14 − 12 = 2, so 14:50 = 2:50 PM, not 4:50 PM.. 14:50 = 2:50 PM.

What is perimeter?: Calculate the perimeter of 2D shapes by adding side lengths.
How can my child practise perimeter at home?: Work through the examples below, then start a free adaptive session. Northstar adjusts the difficulty automatically and tracks mastery over time.

Start a free session that adjusts to your child's level, tracks mastery and celebrates progress.