7.8÷0.52 keep two decimal places?
Calculating vertically, 7.8 ÷ 0.5 = 780 ÷ 52.
Solution: When we calculate division operations, try to choose divisors and divisors that are both whole numbers. If there are decimals between the divisor and the divisor, they can be reduced to all whole numbers. To do the calculation, you should start from the higher place of the divisor, divide the divisor in order to get the quotient, keep the remainder, and then proceed to the next step of the calculation. In the case of infinite recurring decimals, you can calculate to several decimal places as required.
The detailed calculation procedure is as follows.
Step 1: 78 ÷ 52 = 1, remainder 26
Step 2: 260 ÷ 52 = 5
So, you can get 7.8 ÷ 0.52 = 15 by calculating the division operation vertically, retaining two decimal places, and get the answer 15.00.
Checking and calculation: the solution is as follows. multiplying the first digit of one of the digits by the other to get the answer in one step. Then sequentially calculate the multiplication of the other digit from the low to the high digit to get several steps of the answer. Finally add up all the answers obtained to get the final answer.
15 x 0.52 = 7.8
Step 1: 0.02 x 15 = 0.3
Step 2: 0.5 x 15 = 7.5
Step 3: Accumulate the answers of the above two calculations to get 7.8,
So we can check the multiplication operation by vertical calculations, and get the answer as 7.8.
How do you keep two decimals with a decimal point?
15 ÷ 6.2 two decimal places:
First, expand the divisor by 10 times and remove the decimal point to make it a whole number.
The divisor is also expanded 10 times at the same time.
Same number of digits are aligned, if the sum is more than 10, go forward by 1.
Same number of digits are aligned, if it is not enough to subtract the sum, go forward by 1 to get 10.
Multiply the number in the i-th digit of one digit by the j-th digit of another digit.
To multiply a number in the j-th digit of another digit by the j-th digit of another digit. Multiplication:
The i-th digit of a number multiplied by the j-th digit of another number
should be added to the i+j-1 digit of the product.
If 42 is divided by 7.
Divide from 4 [high to low]. When division is done in the vertical formula, divide from the highest place, e.g., 42 is divided from the highest tens place, 4; if it is not possible to divide, e.g., 4 is not divisible by 7, then the highest place and the next place are combined into a single number to be divided until it is possible to divide the divisor; e.g., if 4 is not divisible by 7 in 42 dividing by 7, 4 and 2 are combined into a single number 42 to be divisible by 7, and the quotient is 6.
What does 5.63 ÷ 6.1 with two decimal places equal?
5.63÷6.1 with two decimal places equals 0.92.
Division is done in the vertical form by dividing from the highest place, and if it doesn’t work, then the highest place and the next place are combined to form a single digit until the divisor can be divided.
Properties of division:
When the divisor is enlarged (reduced) by a factor of n, the divisor remains unchanged, and the quotient is enlarged (reduced) by a factor of n accordingly. If the divisor is enlarged (reduced) by a factor of n, the quotient is reduced (enlarged) by a factor of n, while the divisor remains unchanged.
The division of a divisor by two consecutive divisors is equal to the division by the product of the two divisors. Sometimes you can do simple operations based on the properties of division. For example, 300 ÷ 25 ÷ 4 = 300 ÷ (25 × 4) = 300 ÷ 100 = 3.