Without Panic Maths · Number 42

Percentage Increase and Decrease 1

A percentage increase makes an amount bigger: find the part and add it on. A percentage decrease makes it smaller: find the part and take it away. Read the words carefully.

Page 1 of 6Cover and what the pack covers
Cover and what the pack covers
1 / 6 · Cover and what the pack covers
£3.50Go to basket

Secure checkout by Stripe · Instant PDF download

Mini-lessons
11
Questions
142
Student Pack
99 pages
Suggested year
Year 9

What you get

  • Student Pack (PDF, 99 pages)
  • Teacher Pack (PDF) with every answer and reteach cards
  • Print as many copies as you need for your own pupils

Save with a bundle

  • Percentages & FDP8 packs · £28 £25
  • Number, Year 913 packs · £42 £37
  • Number: complete strand54 packs · £182 £161

What this pack does

What pupils learn

A percentage increase makes an amount bigger: find the part and add it on. A percentage decrease makes it smaller: find the part and take it away. Read the words carefully. "More" and "extra" go up; "off" and "fewer" go down.

The mini-lessons

  1. What percentage increase means
  2. What percentage decrease means
  3. Increase by 50%, 25% and 75%
  4. Decrease by 50%, 25% and 75%
  5. Increase using 5%, 15%, 20% and 30%
  6. Decrease using 5%, 15%, 20% and 30%
  7. Percentage change in money contexts
  8. Simple Interest: the Same Increase Every Year
  9. Percentage change in quantity contexts
  10. Spot the language: increase or decrease?
  11. Mixed percentage increase and decrease

Inside every pack

What each part of the page is for

  1. Confidence check

    Pupils tick how a topic feels before they start, and again at the end. There are no marks, so it's an honest picture of where they are.

  2. Short mini-lessons

    Each topic is split into small steps. Every mini-lesson opens with one big idea and a short, plain-English explanation.

  3. Visuals for every idea

    Diagrams such as a formula 'rule machine' or a place-value picture show the maths, so pupils can see it as well as read it.

  4. Worked examples

    Every method is modelled step by step before pupils try it, with each stage labelled so they can follow it on their own.

  5. Scaffolded practice

    Questions start with prompts (what do you need to find, follow the example, check it makes sense) and gradually ask for more independence.

  6. Spot the trap

    Common mistakes are named before pupils make them, and Mistake Detective questions ask them to find and fix errors.

  7. Pause and think

    Short 'explain it in your own words' prompts check that pupils understand why the maths works, not just how.

  8. Teacher Pack with answers

    Every pack comes with a Teacher Pack: all the answers, plus reteach cards saying what to watch for, what to say, and what to try if a pupil is still stuck.

More number packs

Number 17 · Year 8

Multiplying and Dividing Decimals

Multiplying by 10, 100 or 1 000 makes a number bigger, so the digits move left. Dividing makes it smaller, so the digits move right. The decimal point stays still. Count the zeros to know how many places.

£3.50
See inside
Number 18 · Year 8

Multiplying Decimals by Whole Numbers

Multiplying a decimal by a whole number still means equal groups. 0.4 × 3 is three groups of 0.4. Estimate first, multiply, then make sure the answer is a sensible size.

£3.50
See inside

See all packs