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Here you will find a range of free printable rounding worksheets to help your child learn to round numbers to either 1,2 or 3 significant figures. These sheets are carefully graded so that the easier sheets come first and give extra support.
Rules for rounding off numbers (1) If the digit to be dropped is greater than 5, the last retained digit is increased by one. For example, 12.6 is rounded to 13. (2) If the digit to be dropped is less than 5, the last remaining digit is left as it is. For example, 12.4 is rounded to 12.
This resource shows what significant figures are and how to round numbers to one or two significant figures. Examples include rounding numbers such as 1508.06 and 0.01704.
There are three rules on determining how many significant figures are in a number: Non-zero digits are always significant. Any zeros between two significant digits are significant. A final zero or trailing zeros in the decimal portion ONLY are significant. Focus on these rules and learn them well.
SIGNIFICANT FIGURES. The amount of approximation required in a number may be described in another way by saying how many significant figures are required. To find how many significant figures a number contains count all figures in the number except zeros at the beginning or end of the number.
In the BBC Bitesize KS23 maths guide, you can learn how to round numbers to three significant figures. You'll also learn what a significant number is!
5 wrz 2019 · Click here for Answers. . Practice Questions. Previous: Quadratic Formula Practice Questions. Next: Rounding Highest Lowest Practice Questions. The Corbettmaths Practice Questions on Rounding - Significant Figures.
