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Last updated on March 13th, 2025
It is a simple question on decimal conversion. Firstly, we have to learn about mixed numbers and decimals. A mixed number consists of a whole number and a fraction. Here, -3 is the whole number, and 7/8 is the fraction, representing 7 parts of 8 that make up the whole. A decimal is a way to represent numbers that are not whole, using a (.) or decimal point to separate the whole part from the fractional part. The numbers to the left of the decimal point represent the whole, and those to the right represent the fractional part.
-3 7/8 in decimals can be written as -3.875. This is a terminating decimal, which means it ends and does not repeat infinitely.
To convert -3 7/8 into decimal, we first convert the fraction 7/8 into a decimal. Let's see the step-by-step breakdown of the process:
Step 1: Identify the numerator (7) and the denominator (8). The numerator will be taken as the dividend, and the denominator will be taken as the divisor.
Step 2: Divide 7 by 8 using long division. Since 7 is less than 8, we add a decimal point and a zero to make it 70.
Step 3: 8 goes into 70 eight times because 8×8=64. Write 8 in the quotient place.
Step 4: Subtract 64 from 70 to get 6. Bring down another 0 to make it 60.
Step 5: 8 goes into 60 seven times because 8×7=56. Write 7 in the quotient place.
Step 6: Subtract 56 from 60 to get 4. Bring down another 0 to make it 40.
Step 7: 8 goes into 40 five times because 8×5=40. Write 5 in the quotient place. There is no remainder. Therefore, 7/8 as a decimal is 0.875.
Finally, combine it with the whole number -3 to get -3.875.