Operations on natural numbers
mental and written addition, subtraction, multiplication and division, calculating cleverly, estimating, squares and cubes, order of operations, division with remainder, divisibility rules, primes, prime factorisation, GCD and LCM
Exercises are drawn at random from a large bank - every click gives a different set.
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Use the column method
148 · 34
Work out
5² + 2 · 7
Use the column method
8270 : 5
Work out
5³
Problem
Is 130 zloty enough for 3 books at 29 zloty each and a dictionary at 49 zloty?
Work out
42 − 54 : 9
Problem
226 sweets are packed 9 to a box. How many sweets are left over?
Problem
Find GCD(16, 28)
Use the column method
48 313 + 11 820 + 40 180
Problem
Which of these shows 13 divided by 4 with a remainder?
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