The Decimals on the number line 1 exercise used to appear under the 4th grade (U.S.) Math Mission, Arithmetic Math Mission and Pre-algebra Math Mission, but was apparently removed. This exercise experiments with the position of decimals on a number line.

Types of Problems

There is one type of problem in this exercise:

  1. Find the point: This problem asks the user to move an orange dot to the correct spot on a number corresponding to a given decimal number.

    Find the point


This exercise is easy to get accuracy badges and speed badges because there is only one type of problem and the manipulative is very easy to use.

  1. The answer will be on one of the tick marks, not in between two tick marks.
  2. The endpoints of the number line are two different whole numbers and each tick mark corresponds to a tenth. Therefore users can just look at the tenths spot to tell how many tick marks to move.

Real-life Applications

  1. Decimals appear in every-day media to display information to consumers.
  2. Decimals are very common in shopping. Price tags, food labels, and receipts all contain decimals.
  3. At gas pumps, decimals are used to show how much gas is pumped and much it costs per gallon.

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