Welcome to Tackling Add & Subtract

The exciting way to master mental maths!


Tackling Add & Subtract uses exactly the same principles and approach as Tackling Tables – this time to help children develop confidence and fluency in mental addition and subtraction.

Using the following National Curriculum expectations, it uses colour coded cards to help children develop a range of skills. Each phase builds on the previous one to extend their thinking.

Purple Phase will help to develop fluency in:

  • Recognising number bonds to 10 e.g. 3 + 7 = 10
  • Adding doubles within 20 e.g. 6 + 6 = 12
  • Adding near doubles within 20 e.g. 8 + 9 = 17
  • Adding single digits within 10 e.g. 7 + 1 = 8
  • Adding single digits to bridge 10 within 20 e.g. 9 + 6 = 15
  • Adding and subtracting zero
  • Adding 10 to a single digit e.g. 10 + 3 = 13
  • Using the inverse to subtract

Yellow Phase – Building on Purple Phase – will help to develop fluency in:

  • Recognising number bonds to 20 e.g. 14 + 6 = 20
  • Adding multiples of ten to make number bonds to 100 e.g. 20 + 80 = 100
  • Adding double digit multiples of 10 e.g. 40 + 40 = 80
  • Adding a double digit to a single digit without bridging e.g. 42 + 7 = 49
  • Adding a double digit to a single digit to make a multiple of 10 e.g. 21 + 9 = 30
  • Adding a double digit to a single digit to bridge a multiple of 10 e.g. 86 + 7 = 93
  • Adding a multiple of 10 to a double digit e.g. 30 + 18 = 48
  • Using the inverse to subtract

Orange Phase – Building on Purple and Yellow Phases – will help develop fluency in:

  • Adding a double digit to a double digit without bridging e.g. 28 + 41 = 69
  • Adding a double digit to a double digit to make a multiple of 10 e.g. 33 + 47 = 80
  • Adding double digit to a double digit to bridge a multiple of 10 e.g. 55 + 18 = 73
  • Recognising double digit number bonds to 100 e.g. 24 + 76 = 100
  • Using the inverse to subtract

Tackling Add & Subtract Student Pack

This is the only resource you will ever need to help you help your child with mental addition and subtraction.


Tackling Add & Subtract aims to help all children develop fluency in mental addition and subtraction. By working their way through the 3 colour coded phases children will master number bonds to 10 , 20 and 100 and learn how to apply this knowledge to increasingly difficult calculations

How can you use Tackling Add & Subtract in your school?


Option 1 – The paper- based licence £150

  • It includes:
    • All the testing material in as downloadable PDFs
    • Discounted price for Student Packs to encourage parental involvement
    • A free Classroom Box - 30 packs of cards (10 of each colour)
    • The option to purchase extra classroom boxes at a preferential rate of £55

Annual Renewal £125

To pay by invoice:
Contact Dennis & Margi Brown Tel 01553 670438
Mob 07415 225542
Email: enquiries@tacklingtables.co.uk

Use the contact form if you want to request scheme content and sample material.




Option 2 - Classroom Box £75

  • It includes:
    • 30 packs of cards (10 of each colour)
    • Colour coded mixed Addition and Subtraction 100 Question "Beat Your Best" tests and answers to monitor progress
    • Student monitoring sheets to enable them to track progress

To pay by invoice:
Contact Dennis & Margi Brown Tel 01553 670438
Mob 07415 225542
Email: enquiries@tacklingtables.co.uk