Polya's 4 principles of problem solving:
Understand, Plan, Do, Check
My Tests
Sums Tester
Times Table Tester
Number Spelling Tester
CountUp Timer
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Whole Numbers
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Useful Resources
WHOLE NUMBERS
Sum of Consecutive Numbers
Show Me The Working
Find Common Factors
List Factors
Lowest Common Multiple
List Multiples
Number Combinations
List / Check Prime Numbers
Test Odd/Even Numbers