PracticeQuestionsYears 1–7
← Mathematics

Adding and subtracting within 100

Year 2 · Key Stage 1 · 2NF-1, 2AS-1, 2AS-3, 2AS-4 — Facts within 10; bridge 10; use tens and ones

Draft — awaiting teacher review

Builds on: Number bonds to 10 (Year 1), Tens and ones (Year 2)

I

Concept Anchor

To add across 10, make 10 first, then add what is left. To add two 2-digit numbers, add the tens, then add the ones.

Worked example

8 + 5

  1. 1.8 needs 2 more to make 10.
  2. 2.Split 5 into 2 and 3.
  3. 3.8 + 2 = 10, then 10 + 3 = 13.
II

Guided Check

34 + 25

    III

    Independent Diagnostic Practice

    Q1Year 22AS-1 — Add across 10·Fluency·●○○Draft — awaiting teacher review

    What is 8+58 + 5?

    Q2Year 22AS-3 — Use one-digit facts for tens·Reasoning·●●○Draft — awaiting teacher review

    3+4=73 + 4 = 7. So what is 30+4030 + 40?

    Q3Year 22AS-4 — Add using tens and ones·Problem Solving·●●○Draft — awaiting teacher review

    What is 46+2346 + 23?