Websink Prep UK
Find a tutor Become a tutor
Step-by-step practice Maths textbook

Chapter 9: Number stories within 20

  • Strand Problems
  • Level Level 1
  • Practice 89 questions with step-by-step solutions

Step-by-step practice: maths (Level 1). Small steps, repeated until fluent. Content: Read a short story and decide whether to add or take away, Add and take away with totals up to 20, using counting on or back or a ten frame, Check an answer by doing the inverse, Write a number sentence to match a story.

Open Level 1 chapter

By the end of this chapter you will be able to

  • Choose add or take away from a story
  • Add numbers to make a total up to 20
  • Take away from a number up to 20
  • Check an answer by doing the opposite
  • Write a number sentence to match a story

You should already know

  • Adding and taking away within 10 (Chapter 8)
  • Number bonds to 10 (Chapter 5)

Where this leads

  • Shapes (Level 1, Chapter 10)

Lessons in this chapter

  1. 9.1 Add or take away?
  2. 9.2 Adding within 20
  3. 9.3 Taking away within 20
  4. 9.4 Number sentences and checking
  5. Summary and key words
  6. Check-up and practice test questions

Read the whole chapter on one page (good for printing).