Year 2 · Mathematics and statistics · Number
Adding and subtracting to 100
Facts to 20, doubles and halves, adding and subtracting tens and ones within 100, adding 100 and simple story problems.
Everything for this topic in one place
- 3D lesson: Adding and subtracting to 100 — Make a ten, use doubles, add and take away tens and ones with base-10 blocks, add three numbers, add 100 and solve story problems.
- Teacher presentation — slides to put on the projector.
- Worksheets at three levels — Tūī (support), Kererū (core) and Kea (extension), each with an answer key on the last page.
- Online practice — assign it to your class in the Crateclass classroom and the results come back by themselves.
Written for Te Mātaiaho, Phase 1 (Years 0–3), with New Zealand places, money and native birds.
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More Year 2 maths topics
Numbers to 120 and place value · Multiplication and division: 2s, 5s and 10s · Halves, thirds and quarters · Money · Patterns and number sentences · Measurement and time · Shapes, flips, slides and turns · Tally charts and dot plots