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Last updated on May 26th, 2025

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-90 5/8 as a Decimal

Professor Greenline Explaining Math Concepts

It is a simple question on decimal conversion. Firstly, we have to learn fractions and decimals. A fraction represents a part from the whole. It has two parts: the numerator (number on the top) and the denominator (number below). The numerator represents how many parts are being considered out of the whole, and the denominator shows how many parts make up the whole. A decimal is a way to represent a number that is not whole, using a 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.

-90 5/8 as a Decimal for Australian Students
Professor Greenline from BrightChamps

What is -90 5/8 as a decimal?

-90 5/8 as a decimal

Answer

 

-90 5/8 in decimals can be written as -90.625.

 

Explanation

 

To convert -90 5/8 into a decimal, follow these steps:

 

Step 1: Convert the mixed number into an improper fraction. -90 5/8 = -(90 * 8 + 5)/8 = -725/8.

 

Step 2: Divide the numerator by the denominator to get the decimal form.

 

Step 3: Divide -725 by 8.

 

Step 4: 8 goes into 72 eight times (8 * 8 = 64). Subtract 64 from 72 to get 8.

 

Step 5: Bring down the next digit to make 85. 8 goes into 85 ten times (8 * 10 = 80). Subtract 80 from 85 to get 5.

 

Step 6: Bring down a zero to make 50. 8 goes into 50 six times (8 * 6 = 48). Subtract 48 from 50 to get 2.

 

Step 7: Bring down another zero to make 20. 8 goes into 20 two times (8 * 2 = 16). Subtract 16 from 20 to get 4.

 

Step 8: Bring down another zero to make 40. 8 goes into 40 five times (8 * 5 = 40) with no remainder.

 

Thus, the answer for -90 5/8 as a decimal is -90.625.

Professor Greenline from BrightChamps

Important Glossaries for -90 5/8 as a decimal

  • Fraction: A numerical quantity that is not a whole number, representing a part of a whole.
     
  • Decimal: A number that uses the base ten and includes a decimal point to separate the whole part from the fractional part.
     
  • Numerator: The top part of a fraction, indicating how many parts of the whole are being considered.
     
  • Denominator: The bottom part of a fraction, showing how many parts make up a whole.
     
  • Mixed Number: A number consisting of an integer and a proper fraction.
Professor Greenline from BrightChamps

About BrightChamps in Australia

At BrightChamps, math questions are more than just exercises—they’re opportunities to grow and explore! Our mission is to help children across Australia develop important skills, including today’s focus on the -90 5/8 as a Decimal with special attention on decimal conversions—in a fun, lively, and easy-to-understand way. Whether your child is calculating the speed of a roller coaster at Luna Park Sydney, tracking scores at a local cricket match, or managing their allowance for the latest gadgets, strong math skills give them confidence for daily challenges. Our lessons are interactive and designed to be enjoyable. Since kids in Australia learn in various ways, we customize our teaching to meet their individual styles. From Sydney’s vibrant streets to the beautiful Gold Coast beaches, BrightChamps brings math to life, making it relatable and exciting throughout Australia. Let’s make decimal conversions a fun part of every child’s math journey!
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