"Multiply three digits with two digits with 0 at the end of the multiplier" PPT courseware for multiplying three digits with two digits Simple campus recruitment activity planning plan summary enterprise and institution recruitment publicity lecture PPT template is a general PPT template for business post competition provided by the manuscript PPT, simple campus recruitment activity planning plan summary enterprise and institution recruitment promotion Lecture PPT template, you can edit and modify the text and pictures in the source file by downloading the source file. If you want more exquisite business PPT templates, you can come to grid resource. Doug resource PPT, massive PPT template slide material download, we only make high-quality PPT templates!
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"Multiply three digits with two digits with 0 at the end of the multiplier" PPT courseware for multiplying three digits with two digits
Teaching requirements
1. Let students experience the process of exploring the calculation method of three-digit times two-digit numbers and master the simple calculation method of three-digit times two-digit numbers.
2. Understand the simple arithmetic of written multiplication with 0 at the end of the multiplier, master the oral calculation methods of hundreds times tens, hundreds times tens, and hundreds times tens times tens, and be able to calculate correctly orally.
3. Students experience the joy of success through independent exploration, cooperation and communication, and increase their enthusiasm for active learning.
Oral calculation
123×3 150×4 5×600
24×20 500-375 80+950
8×9+7 5×7+6 4×8+9
1. To multiply a three-digit number by a two-digit number, use the numbers in the units and tens digits of the two-digit number to multiply the three-digit number in turn; The bit is aligned with that bit; add the products of the two multiplications.
2. Written calculation skills: First, pay attention to which digit of the multiplier the last digit of each product is aligned with; second, pay attention to not missing a multiplication when there is a 0 in the middle of the three-digit number; third, pay attention not to forget to add the digit in each calculation. Carry digits.
The written calculation of multiplying a three-digit number with a zero at the end of the multiplier by a two-digit number:
When calculating a multiplication with 0 at the end of the multiplier, align the parts before the 0 and multiply first, then look at how many 0s there are at the end of the two multipliers, and finally add a few 0s at the end of the multiplied number.
Calculation formula for 0 at the end of the multiplier:
A simple way to increase speed is to multiply the previous number first; the last few zeros in the multiplier must be added after the resulting number.
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