The Adding fractions with 10 and 100 as denominators exercise appears under the 4th grade (U.S.) Math Mission, Arithmetic essentials Math Mission, Pre-algebra Math Mission and Mathematics I Math Mission. This exercise practices adding fractions with unlike denominators, but specifically with denominators are powers of ten.

Types of Problems

There is one type of problem in this exercise:

  1. Add the fractions: This problem asks the user to add two fractions together, one of which has a denominator of ten and the other with a denominator of one hundred. The answer is to be given in fraction form.

    Add the fractions


This exercise is easy to get accuracy badges because the fractions are easily able to be converted into ones with common denominators. Speed badges are also easy once users get into a nice rhythm since there is only one type of problem.

  1. Answers must be given as fractions, decimals not accepted.
  2. Fractions do not have to be simplified or reduced.
  3. If {a} is the number above the 10 and {b} is the number above the 100, the answer will always be {10a+b} over 100.

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