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Mental strategies - adding three numbers less than 15

• Activity type: Assessment
• 3916
• Fullscreen
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• Mental strategies - adding three numbers less than 15
• Course: Mathematics
• Outcome: Add three large numbers
• Activity Type: Assessment
• Activity ID: 3916

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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

• 7.NA – Number and algebra
• 7.NA.1 – Apply additive and multiplicative strategies flexibly to whole numbers, ratios, and equivalent fractions (including percentages)

• 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.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 Kingdom – National Curriculum expand/collapse

• KS2.Ma2 – Number and algebra
• Knowledge, skills and understanding

• Calculations

• KS2.Ma2.3 – Pupils should be taught to:

• Mental methods

• KS2.Ma2.3.e – Work out what they need to add to any two-digit number to make 100, then add or subtract any pair of two-digit whole numbers; handle particular cases of three-digit and four-digit additions and subtractions by using compensation or other methods [for example, 3000 - 1997, 4560 + 998]

• Written methods

• KS2.Ma2.3.i – Use written methods to add and subtract positive integers less than 1000, then up to 10000, then add and subtract numbers involving decimals; use approximations and other strategies to check that their answers are reasonable