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Algebra Basic Review

Year 7 HAHS

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Cards in this guide (7)
Computation with intergers

integers are whole numbers, positive and negative. Zero is an integer

Commutative law

The order we add doesn't matter (Only applies for addition)

Associative law

Any pair can added first (Only applies for addition)

Partitioning

Adding numbers through the split strategy (171 + 23 = 100 + (70+20) + (3+1) = 194)

Compensating

Compensation Strat. Rounding something towards the nearest 0's. Then afterwards adjusting back to the original number by adding and subtracting

Doubling or Halving

Trying to make a number repeating (75 + 78 = 75+75+3)

Distributive law

6 x 21 = 6x(20+1), (6x20) + (6x1), 120 +6 = 126

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