"Mixed Fraction Operations" Fraction Division PPT Courseware

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"Mixed Fraction Operations" Fraction Division PPT Courseware

Review before class

1. Calculate the following exercises:

6×5÷3＝30÷3＝10

15×(35÷7)＝15×5＝75

Cooperation and exchange

Think about it: How to list the comprehensive number of people in the Qihang module?

The order of mixed operations on fractions is the same as the order of mixed operations on integers.

Fill it out

1. The order of mixed operations on fractions and the order of mixed operations on integers ( ). Calculate ( ) first, then ( ). Those with parentheses are calculated first ( ).

2. When calculating 1/4÷1/2÷1/5, you should calculate ( ) first and then ( ).

3. When calculating 3/4×(5/6+3/8), you should calculate ( ) first and then ( ).

4. Find the number that is 2/3 less than 2/3 of 4/5. The formula is ( )

A.4/5×2/3+2/3 B.4/5-2/3×2/3 C.4/5×2/3-2/3

Class summary

The operations of multiplication, division, and mixed multiplication and division of fractions are performed in the same order as for integers. The order of operations cannot be changed arbitrarily.

When multiplying fractions, they can be reduced first and then calculated more easily.

When performing continuous division operations on fractions, you must first rewrite the division sign into a multiplication sign, reverse the position of the divisor, and then perform the multiplication operation.

When performing mixed operations of multiplication and division of fractions, you must first change all division signs into multiplication signs and divisors into reciprocals, and then perform reduction calculations.

1. When adding or removing parentheses during calculation, pay attention to: the symbol in front of the parentheses, if it is a plus sign, the symbol in the parentheses remains unchanged; if it is a minus sign, the plus sign in the parentheses becomes a minus sign, and the minus sign becomes a plus sign. .

2. In the same way, if the sign before the bracket is a multiplication sign, the sign in the bracket remains unchanged. If the sign before the bracket is a division sign, the multiplication sign in the bracket becomes a division sign, and the division sign becomes a multiplication sign.

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For more information about the PPT courseware "Fraction Division, Fraction Mixed Operations", please click the Fraction Division ppt Fraction Mixed Operations ppt tag.

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"Mixed Fraction Operations" PPT courseware 3:

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Update Time: 2024-10-05

This template belongs to Mathematics courseware Jiangsu Education Edition Sixth Grade Mathematics Volume 1 industry PPT template

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