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The Dividing decimals 1 exercise appears under the 5th grade (U.S.) Math Mission, 6th grade (U.S.) Math Mission, Arithmetic essentials Math Mission, Pre-algebra Math Mission and Mathematics I Math Mission. This exercise introduces division by decimal numbers.

Types of Problems

There is one type of problem in this exercise:

  1. Find the quotient: This problem has a division problem that involves dividing a whole number by a decimal. The user is to find the answer and write it in the space provided.
    Divdec1

    Find the quotient

Strategies

This exercise is easy to get accuracy badges because users are dividing by pretty standard decimals. The speed badges can be done easily if they think of some of the decimals as fractions.

  1. A calculator goes against the spirit of the problem and is not likely to increase speed here.
  2. If users can think of the decimal as a fraction, many of these can turn into multiplication problems since dividing by a fraction is equivalent to multiplying by a reciprocal.
  3. Some of the standard fractions in decimal form: {0.2 \iff 5}, {0.25\iff 4}, {0.2\iff 5} and {0.1 \iff 10}.
  4. Dividing by 0.75 is like multiplying by {\frac{4}{3}}, so users can divide the number by 3, then divide by 4.

Real-life Applications

  1. Decimals appear in every-day media to display information to consumers.

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