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AF 1.1 Write equations using variables

AF 1.1 Write equations using variables. Definitions. Variable – A variable is a letter or symbol that represents a number (unknown quantity). 8 + n = 12 8 + = 12. Definitions. A variable can use any letter of the alphabet. n + 5 x – 7 w - 25. Words That Lead to Addition. Sum

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AF 1.1 Write equations using variables

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  1. AF 1.1 Write equations using variables

  2. Definitions • Variable – A variable is a letter or symbol that represents a number (unknown quantity). • 8 + n = 12 • 8 + = 12

  3. Definitions • A variable can use any letter of the alphabet. • n + 5 • x – 7 • w - 25

  4. Words That Lead to Addition • Sum • More than • Increased • Plus • Altogether

  5. Words That Lead to Subtraction • Decreased • Less • Difference • Minus • How many more

  6. Write Algebraic Expressionsfor These Word Phrases • Ten more than a number • A number decrease by 5 • 6 less than a number • A number increased by 8 • The sum of a number & 9 • 4 more than a number n + 10 w - 5 x - 6 n + 8 n + 9 y + 4

  7. Write Algebraic Expressionsfor These Word Phrases • A number plus 2 • A number decrease by 1 • 31 less than a number • A number increased by 7 • The sum of a number & 6 • 9 more than a number s + 2 k - 1 x - 31 b + 7 n + 6 z + 9

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