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4.NBT.5 – Multiply a whole number of up to four digits by a one-digit whole number, and multiply two two-digit numbers, using strategies based on place value and the properties of operations. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.
Samples: Adding on to Multiples of 10. Multiplying 2 digits by a 1 digit number - Mental Strategies. Short multiplication.
Number and place value
ACMNA099 – Use estimation and rounding to check the reasonableness of answers to calculations
Samples: Two digit addition (estimating). Division (estimation) - 1. Rounding numbers to the nearest 10.
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
Samples: Write numbers – to 100,000. Reading numbers – to 100,000. Comparing numbers – to 100,000.
6.NA.3 – Describe spatial and number patterns, using:
6.NA.3.b – Rules that involve spatial features, repeated addition or subtraction, and simple multiplication.
Samples: Addition two Digit - Missing Numbers. Addition Make 100. Make 100. Challenge puzzle. Addition Of Five Digit Numbers.
KS2.Y5.N.AS – Number - addition and subtraction
Pupils should be taught to:
KS2.Y5.N.AS.1 – Add and subtract whole numbers with more than 4 digits, including using formal written methods (columnar addition and subtraction)
Samples: Addition Of Five Digit Numbers. Adding on to Multiples of 10. Addition of large numbers.