1. VARIABLES & EXPRESSIONS 1-1

2. VOCABULARY Variable – a letter that stands for a number Variable Expression – mathematical phrase that uses variables, numerals, and operational symbols Numerical Expression – mathematical phrase that uses numbers and operational symbols only

3. Examples… Identify as a Numerical or Variable Expression 50 – 5 c – 5 Numerical Variable 4t Variable 7 x 3 Numerical 8 ÷ x Variable d + 43 – 9 Variable

4. Mathematical Operations ADDSUBTRACTMULTIPLY DIVIDE TotalDifferenceProductQuotient More thanFewer thanTimesDivided by Increased by Less than Decreased by +-, ( ), x÷, ---, /

5. Examples Translate from word sentences to number sentences. 1.) m divided by 6 2.) 9 less than k Create problems based on what is written. 1.) The value in cents of 5 quarters 2.) The number of months in y years m/6 K – 9 5(25) Y(12)