# N1/E3.8

Use estimation in solving problems
(a) Know how to approximate numbers by rounding and use in approximate calculations
(b) Understand that a knowledge of context enables 'guessing' at answers (e.g. it should be about. . .), or judging if answers are sensible (e.g. that's far too big; it doesn't make sense to have an answer less than 1, etc.)

## Estimating practice

A very clear, step by step worksheet that makes a great introduction to this important topic. It’s also ideal for underpinning Functional Maths.

Level
Entry Level 3
Level 1
Maths
Functional Maths
MSS1/E3.2
N1/E3.8
N1/L1.9

## Rounding and estimating

A straightforward but very useful worksheet for Entry 3 – covers money, whole numbers and decimals.

Level
Entry Level 3
Maths
MSS1/E3.2
N1/E3.8
N1/E3.7

## Estimating total cost

Practise rounding money and estimating totals. 5 questions for Entry 3.

Level
Entry Level 3
Maths
MSS1/E3.2
N1/E3.8
Context
Retail Hospitality Customer service

## Estimating expenses - checking a claim

Darcy v Wickham! A great way to introduce students to estimation and ‘what is reasonable’.

Level
Entry Level 3
Level 1
Maths
AN MSS1/E3.1 Add & subtract money using decimal notation
AN MSS1/L1.1 Add, subtract, multiply & divide sums of money and record
N1/E3.8
N1/L1.9
Context
Employment skills & Public services