"Approximate Values ​​of Quotient" Decimal Division PPT Courseware 4

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"Approximate Values ​​of Quotient" Decimal Division PPT Courseware 4

Xiao Wang walked a total of 2.19 meters in 6 steps. What is the average length of each step?

2.19÷6≈0.37(m)

Answer: The average step is about 0.37 m.

Teacher Guo walked a total of 5.72 meters in 8 steps. How many meters is the average step?

5.72÷8≈0.72(m)

Answer: The average step is about 0.72 m.

I will summarize:

The general method for finding the approximate value of a quotient is to divide one more decimal places than the number of decimal places that need to be retained when calculating the quotient, and then use the "rounding" method to find the quotient. When encountering problems in life, you should consider how many decimal places should be kept based on the actual situation.

test you

1. Calculate the following questions. (Round to one decimal place)

48÷23 52.7÷18

2. Calculate the following questions. (Keep the result to two decimal places)

7.83÷2.3 6.77÷3.5

3. Xiaoliang walked a total of 3.3 meters in 8 steps. How many meters is Xiaoliang’s average step length?

4. Master Li has a 25-meter-long piece of iron wire and plans to make the following hoops. Each hoop requires 3.2 meters of wire. How many hoops can be made from this piece of wire?

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"Approximate Values ​​of Quotient" Decimal Division PPT Courseware 3:

"Approximate Values ​​of Quotient" Decimal Division PPT Courseware 3 Oral Calculation. 2.4 2 = 0.56 7 = 0.10.05 = 0.360.12 = 7.2 0.9 = 1 0.25 = Use the rounding method to find the approximate number: 43.9095 The retained integer is ( ) 43.9095 Accurate to the tenth place is ( ) 43..

"Approximate Values ​​of Quotient" Decimal Multiplication and Division PPT Courseware 2:

"Approximate Values ​​of Quotient" Decimal Multiplication and Division PPT Courseware 2 1. Calculate the following questions orally. 0.3+0.77= 0.50.5= 0.1-0.01= 1000.06= 0.213= 4.30.02= 0.3510= 0.8+5.2= ... ... ... Practice 1. Determine whether to use the further method or the next method for each of the following questions. .

"Approximate Values ​​of Quotient" Decimal Multiplication and Division PPT Courseware:

"Approximate Values ​​of Quotient" decimal multiplication and division PPT courseware uses the rounding method to find approximate numbers: 43.9095 Keeping the whole number is ( ) 43.9095 Accurate to the tenth place is ( ) 43.9095 Keeping two decimal places is ( ) 43.9095 Accurate to the thousandth place is ( ) Accurate number..

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Update Time: 2024-10-03

This template belongs to Mathematics courseware Western Normal University Edition Fifth Grade Mathematics Volume 1 industry PPT template

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