Here are the step-by-step solutions for each problem on the worksheet.
1) Pounds to Ounces
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Goal: Convert 450 ounces into pounds.
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Rule: 1 pound = 16 ounces.
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Step: Since you are going from a smaller unit (ounces) to a larger unit (pounds), you divide.
$$450 \div 16 = 28.125$$
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Result: There are 28.125 pounds.
2) Minutes to Hours
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Goal: Convert 420 minutes into hours.
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Rule: 1 hour = 60 minutes.
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Step: Divide the total minutes by 60.
$$420 \div 60 = 7$$
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Result: It takes 7 hours.
3) Feet to Meters
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Goal: Convert 40 feet into meters.
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Rule: 1 ft = 0.3048 meters.
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Step: Multiply the number of feet by the conversion factor.
$$40 \times 0.3048 = 12.192$$
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Result: The land is 12.192 meters long.
4) Milliliters to Cubic Centimeters
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Goal: Convert 5 mL into cc's.
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Rule: 1 mL = 1 cc.
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Step: Since the ratio is 1 to 1, the number stays exactly the same.
$$5 \times 1 = 5$$
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Result: There are 5 cc's.
5) Celsius to Fahrenheit
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Goal: Convert $15^\circ\text{C}$ to Fahrenheit.
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Formula: $F = C \times (9/5) + 32$
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Step 1: Plug in 15 for C.
$$15 \times (9/5) + 32$$
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Step 2: Do the multiplication first. $15 \times 9 = 135$, and $135 \div 5 = 27$. (Or simply: $15 \div 5 = 3$, and $3 \times 9 = 27$).
$$27 + 32$$
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Step 3: Add 32.
$$27 + 32 = 59$$
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Result: The temperature is $59^\circ\text{F}$.
6) Meters to Centimeters
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Goal: Convert 1.2 meters into cm.
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Rule: 1 m = 100 cm.
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Step: Multiply the meters by 100. When you multiply by 100, move the decimal point two spots to the right.
$$1.2 \times 100 = 120$$
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Result: The paper is 120 cm long.
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Final Answer:
1) 28.125 lbs
2) 7 hours
3) 12.192 meters
4) 5 cc
5) 59°F
6) 120 cm
Parent Tip: Review the logic above to help your child master the concept of conversion word problems worksheet.