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Subtracting decimals 0.5
Subtracting decimals 0.5 256
Description
Exercise Name: Subtracting decimals 0.5
Math Missions: 5th grade (U.S.) Math Mission, Arithmetic essentials Math Mission and Pre-algebra Math Mission, Mathematics I Math Mission
Types of Problems: 1

The Subtracting decimals 0.5 exercise appears under the 5th grade (U.S.) Math Mission, Arithmetic essentials Math Mission, Pre-algebra Math Mission and Mathematics I Math Mission. This exercise practices subtracting decimal numbers.

Types of Problems

There is one type of problem in this exercise:

  1. Subtract the numbers: This problem has a subtraction problem about the difference of two decimal numbers. The user is asked to find the correct answer and put it in the slot.
    Sub-dec-half

    Subtract the numbers

Strategies

This exercise is easy to get accuracy and speed badges because there is only one type of problem and it can be done very quickly.

  1. Using a calculator goes against the spirit of the problem, but can increase speed.
  2. Borrowing is not necessary on these problems in the decimal part (but may be in the whole number part).
  3. Subtracting using a distance model can increase speed over the standard algorithms.
  4. These problems specifically have both decimal numbers using the tenths spot, but nothing smaller.

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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