Example 3 Using Mixed Numbers in Real Life A corn snake that is inches long grows to a length of inches. How much does it grow? BIOLOGY 4 3 14 4 1 27 4.

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Presentation transcript:

Example 3 Using Mixed Numbers in Real Life A corn snake that is inches long grows to a length of inches. How much does it grow? BIOLOGY = – – Rename so its fraction part is greater than SOLUTION To find the amount of growth, subtract the original length from the current length =+ – Write mixed numbers in expanded form.

Example 3 Using Mixed Numbers in Real Life Distributive property =+ –– Commutative property = – () Subtract integers and fractions. 12 =+ 4 2 Write as a mixed number and simplify. 12 = 4 2 = 2 1 ANSWER The snake grows inches

Example 4 Evaluating Longer Expressions a – = 259 – + Write over common denominator. 259 – + = 11 6 Evaluate numerator from left to right b. –+= 324 – + Commutative property () – = Evaluate inside parentheses. = Rename.

Guided Practice 3. GARDENING for Examples 3 and A plant that is inches high grows to a height of inches. Find the amount of growth ANSWER Evaluate. Then simplify if possible ANSWER –

Guided Practice for Examples 3 and 4 Evaluate. Then simplify if possible ANSWER – 23