| Subtracting decimals 2 (with the standard algorithm) | |
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| Description | |
| Exercise Name: | Subtracting decimals 2 (with the standard algorithm) |
| Math Missions: | Pre-algebra Math Mission, Mathematics I Math Mission |
| Types of Problems: | 1 |
The Subtracting decimals 2 (with the standard algorithm) exercise appears under the 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:
- 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.
Subtract the numbers
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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.
- Using a calculator goes against the spirit of the problem, but can increase speed.
- Borrowing is necessary on most of these problems.
- Subtracting using a distance model can increase speed over the standard algorithms.
- These problems specifically have both decimal numbers using the tenths, hundredths, or both.
Real-life Applications[]
- Decimals appear in every-day media to display information to consumers.
- Decimals are very common in shopping. Price tags, food labels, and receipts all contain decimals.
- At gas pumps, decimals are used to show how much gas is pumped and much it costs per gallon.