Subtracting decimals 3 (with the standard algorithm)

The  exercise appears under the Pre-algebra 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 student is asked to find the correct answer and put it in the slot.Subtracting decimals 3 (with the standard algorithm).PNG

Strategies
This exercise is easy to get accuracy badges 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 necessary on most of these problems.
 * 3) Subtracting using a distance model can increase speed over the standard algorithms.
 * 4) These problems specifically have both decimal numbers using the tenths, hundredths, or both.

Real-life Applications

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