Vertical calculation of multiplication column in the first volume of the fifth grade

Fifth grade volume multiplication: decimal multiplication.

Integer times decimal: 689×4.8

Decimal times integer: 6.6× 125

Decimal times decimal: 123.5×4.6

Calculation method: one count, two look, three points. That is, first calculate the product according to the law of integer multiplication, then see how many decimal places there are in the factor, and finally count the decimal places at the end of the product.

Judging whether the old college entrance examination mathematics big questions (generally 20 questions) are sure. If you don't calculate the value of k, do you deduct points directly from the size of

Xiaohong gave Xiaoming 33.5 yuan. After 4.8 yuan, both of them can buy a book on mathematical culture. How much money does Xiaoming have?

Mathematical micro-incision

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Written examination questions of Nanjing mathematics teacher recruitment examination

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Super invincible mathematical genius. Come on! On the quadratic equation of one variable

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The real number of math problems in the second day of junior high school