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Authoritative PPT Summary
"Fraction Multiplication" PPT
Part One: Analysis of Examples
Example 1. Each bag of sugar weighs 2/5 kilogram. How many kilograms do the three bags of sugar weigh in total?
To multiply a fraction by an integer, use the product of the numerator times the integer as the numerator, and the denominator remains unchanged.
Example 2. (1) How much yuan should you pay to buy 2 kilograms of strawberries?
(2) How much yuan does it cost to buy 3 kilograms of strawberries?
(3) How much does it cost to buy a kilogram of strawberries?
Unit price × quantity = total price
(1) 5×2=10 (yuan)
(2) 5×3=15 (yuan)
(3) 5×1/2 = 5/2 = 2.5 (yuan) 5×2/5 = 10/5 = 2 (yuan)
To find the fraction of a number, use multiplication.
Fraction multiplication PPT, part 2: do the math.
If the result is not the simplest fraction, it must be reduced to fractions.
You can also divide first and then multiply.
Operation
calculate.
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