A D S U B T R C I N G.

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Presentation transcript:

A D S U B T R C I N G

THE ORDER OF WORK 1. Isolate terms 2. Work out anything in brackets 3. Work out each term 4. Add and subtract from left to right.

TERMS A term of an algebraic expression is a piece that belongs together. Terms are separated by plus or minus signs. The plus or minus sign is the start of the new term and is a part of that term. Plus or minus signs inside brackets (including fraction lines) do not count.

5 4 a 10 ? × 2 – 7 17 8 a 10 ? – 7 × 2

Magic Squares 6 1 8 7 5 3 2 9 4

Magic Squares 1. 2. 3. 4. 5. 6. 7. 8. 9.

1. 2x + 3 + 7x – 2 2. 5 + 4(1 – x) 3. 6(3x + 4) + 10(5 – x) + 2(x – 30) 4. 5(2x + 3) + 7(4 – x) + 8(2x – 4) + 10(1 – x) – 3x 5. 3(x + 2) + 2(x + 1) 6. (7 – 3)(x + 1) + (x – 2)5 – (3 + 2) × x + 7. 8 + 3(4x – 2) – 12x 8. 7(2x + 1) 9. 7(2x + 5) – 13x – 20

1. 9x +1 2. 9 – 4x 3. 10x + 14 4. 6x + 21 5. 5x + 8 6. 4x - 5 7. 2 8. 14x + 7 9. x + 15