Add three numbers - each under 6

  • Add three numbers - each under 6
  • Course: Mathematics
  • Grade: Year 3
  • Section: Addition
  • Outcome: Add three sets of numbers - numbers under 6
  • Activity Type: Printable
  • Activity ID: 3324

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United Kingdom – National Curriculum expand/collapse

  • KS1 – Key Stage 1
    • KS1.Ma2 – Number
      • Knowledge, skills and understanding

        • Calculations

          • KS1.Ma2.3 – Pupils should be taught to:

            • Number operations and the relationships between them

              • KS1.Ma2.3.a – Understand addition and use related vocabulary; recognise that addition can be done in any order; understand subtraction as both 'take away' and 'difference' and use the related vocabulary; recognise that subtraction is the inverse of addition; give the subtraction corresponding to an addition and vice versa; use the symbol '=' to represent equality; solve simple missing number problems [for example, 6 = 2 + ? ]

            • Mental methods

              • KS1.Ma2.3.c – Develop rapid recall of number facts: know addition and subtraction facts to 10 and use these to derive facts with totals to 20, know multiplication facts for the x2 and x10 multiplication tables and derive corresponding division facts, know doubles of numbers to 10 and halves of even numbers to 20

              • KS1.Ma2.3.e – Carry out simple calculations of the form 40 + 30 = ?, 40 + ? = 100, 56 - ? = 10; record calculations in a number sentence, using the symbols +, -, x, ÷ and = correctly [for example, 7 + 2 = 9] .

Australia – Australian Curriculum expand/collapse

  • Year 1
    • Number and Algebra
      • Number and place value

        • ACMNA015 – Represent and solve simple addition and subtraction problems using a range of strategies including counting on, partitioning and rearranging parts

  • Year 2
    • Number and Algebra
      • Number and place value

        • ACMNA029 – Explore the connection between addition and subtraction

  • Year 3
    • Number and Algebra
      • Number and place value

        • ACMNA055 – Recall addition facts for single-digit numbers and related subtraction facts to develop increasingly efficient mental strategies for computation

New Zealand – National Standards expand/collapse

  • 4 – Year 4
    • 4.NA – Number and algebra
      • 4.NA.1 – Apply basic addition and subtraction facts, simple multiplication facts, and knowledge of place value and symmetry to:

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

United States – Common Core State Standards expand/collapse

  • 1 – Grade 1
    • 1.OA – Operations & Algebraic Thinking
      • Mathematics

        • 1.OA.2 – Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

      • Mathematics

        • 1.OA.4 – Understand subtraction as an unknown-addend problem. For example, subtract 10 – 8 by finding the number that makes 10 when added to 8. Add and subtract within 20.

      • Mathematics

        • 1.OA.6 – Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 – 4 = 13 – 3 – 1 = 10 – 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 – 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).

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

        • 2.OA.2 – Fluently add and subtract within 20 using mental strategies. (See standard 1.OA.6 for a list of mental strategies.) By end of Grade 2, know from memory all sums of two one-digit numbers.