"Written Calculation of Three Digits Multiplied by One Digit" Multiplying Two and Three Digits by One Digit PPT Courseware 2

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"Written Calculation of Three Digits Multiplied by One Digit" Multiplying Two and Three Digits by One Digit PPT Courseware 2

Learn important and difficult points

Focus: Master the written calculation method of multiplying three-digit numbers by one-digit numbers.

Difficulty: Understand the calculation method of multiplying multiple digits by one digit with consecutive carries.

Explore the written calculation method of multiplying three-digit numbers by one-digit numbers

Multiply 3 by 3 in the units digit of a three-digit number to get 9. Write 9 in the units digit of the product.

Multiply 3 by 2 in the tens place of the three-digit product to get 6 (i.e. 6 tens). Write 6 in the tens place of the product.

Multiply 3 by 2 in the hundreds place to get 6 (i.e. 6 hundreds). Write 6 in the hundreds place of the product.

Method 2 for multiplying two digits by one digit

Column vertical calculation:

Multiply 5 by 9 in the ones digit of the three-digit number to get 45. Add 4 to the tens place and write 5 in the ones digit of the product.

Multiply 5 by 6 in the tens place to get 30, add the 4 in the tens place to get 34, add 3 to the hundreds place, and write 4 in the tens place of the product.

Multiply 5 by the 6 in the hundreds place of the three-digit number to get 30, add the 3 that comes up to get 33, add 3 to the thousands place, write 3 in the hundreds place of the product, and write 3 in the thousands place.

In conclusion

The written calculation of multiplying a three-digit number by a one-digit number: align the same digits, multiply from the ones digit, and use one digit to multiply the number in each digit of the three-digit number in turn. Whichever digit you are multiplying with, point to the bottom of that digit. When writing a product, whichever digit is multiplied to reach tens will be advanced to the previous digit.

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"Written multiplication of three-digit numbers by one-digit numbers" Multiplying two and three-digit numbers by one-digit numbers PPT courseware:

"Written Calculation of Three Digits Multiplied by One Digit" PPT Courseware of Multiplying Two and Three Digits by One Digit Teaching Objectives 1. Combined with specific examples, experience the process of independently trying the calculation method of three digits multiplied by one digit. 2. Master the written calculation method of multiplying three digits by one digit, and be able to correctly calculate three digits by one..

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Update Time: 2024-10-21

This template belongs to Mathematics courseware Hebei Education Edition Third Grade Mathematics Volume 1 industry PPT template

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