5 Questions
When deciding whether to round up or round down a number, what factor determines the decision according to the text?
The digit to the right of the 'target' digit
What happens to smaller digits when rounding a number according to the text?
They are replaced with zeros
Which factor can cause a domino effect in rounding numbers?
The presence of a lot of 9s in the number
What is the purpose of rounding numbers according to the text?
To make a less precise version of the number
Which place values can rounding be done to according to the text?
Nearest tenth
Study Notes
- Rounding is the process of making a less precise version of a number for easier calculations or when less precision is needed.
- Rounding involves deciding whether to keep the 'target' digit the same or increase it by one, based on the digit in the next smaller place.
- The decision to round up or round down is determined by whether the digit to the right of the 'target' is 5 or greater (round up) or less than 5 (round down).
- Rounding involves replacing smaller digits with zeros and keeping larger digits the same in the rounded version.
- Rounding can be done to different place values such as nearest 10, 100, tenth, hundredth, or whole number.
- Rounding can have a domino effect, where rounding one digit may affect the digits to the left, especially when dealing with numbers containing a lot of 9s.
- Practice is essential to master the skill of rounding numbers effectively.
Learn about the process of rounding numbers to different place values and how to make a number less precise for easier calculations. Understand the rules for deciding whether to round up or round down based on the digit to the right of the 'target'. Practice rounding numbers effectively to master this skill.
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