Mental strategies - subtract multiples of 100

  • Mental strategies - subtract multiples of 100
  • Course: Mathematics
  • Grade: Year 4
  • Section: Subtraction
  • Outcome: Subtracting lots of 10
  • Activity Type: Printable
  • Activity ID: 3951

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United Kingdom – National Curriculum expand/collapse

  • KS1.Y2 – KS1 Year 2
    • Year 2 programme of study
      • KS1.Y2.N.AS – Number - addition and subtraction

        • Pupils should be taught to:

          • KS1.Y2.N.AS.3 – Add and subtract numbers using concrete objects, pictorial representations, and mentally, including:

  • KS2.Y3 – KS2 Year 3
    • Year 3 programme of study
      • KS2.Y3.N.AS – Number - addition and subtraction

        • Pupils should be taught to:

          • KS2.Y3.N.AS.1 – Add and subtract numbers mentally, including:

            • KS2.Y3.N.AS.1.b: a three-digit number and 10s

Australia – Australian Curriculum expand/collapse

This activity is not included in Australia–Australian Curriculum

You can go to an overview of all the curricula here.

New Zealand – National Standards expand/collapse

  • 5 – Year 5
    • 5.NA – Number and algebra
      • 5.NA.1 – Apply additive and simple multiplicative strategies and knowledge of symmetry to:

        • 5.NA.1.a – Combine or partition whole numbers

  • 6 – Year 6
    • 6.NA – Number and algebra
      • 6.NA.1 – Apply additive and simple multiplicative strategies flexibly to:

        • 6.NA.1.a – Combine or partition whole numbers, including performing mixed operations and using addition and subtraction as inverse operations

United States – Common Core State Standards expand/collapse

  • 2 – Grade 2
    • 2.OA – Operations & Algebraic Thinking
      • Mathematics

        • 2.OA.1 – Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem. (See Glossary, Table 1. http://www.corestandards.org/the-standards/mathematics/glossary/glossary/ )

    • 2.NBT – Number & Operations in Base Ten
      • Mathematics

        • 2.NBT.5 – Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.