Number Line
This is a number line with both positive and negative values. Positive numbers are located to the right of 0 (zero) and negative numbers are located to the left of 0. The numbers increase from left to right. For any number, everything to the right of it is always greater. Example: 0 is greater than -5.
Here is a number line that shows fraction or decimal values with negative numbers.
How do you determine the value of the red dot? The red dot is between -7 and -8 on the number line so it has a fractional or decimal value. This means the red dot is -7 + The number of equal parts from one whole number to the next whole number is the number in the denominator. This means the red dot is -7 + The number of equal parts from -7 to the red dot is the number in the numerator. Note: For negative numbers, we count to the left. For positive numbers, we count to the right. This means the red dot is -7 + So the value of the red dot is -73/4 or -7.75.
This means the red dot is -7 +
Example 1:
Choose one or more answers that represent the point in the number line -286/5 -29.25 -29.2 -291/5 -291/4 The red dot is between -30 and -29 so it has a fractional or decimal value. -29 + ?/? There are 5 equal parts between -30 and -29 and 5 equal parts between -29 and -28. -29 + ?/5 There is 1 equal part from -29 to the red dot. -29 + -1/5 So the red dot is -291/5. Find the decimal value of the fraction: -291/5 = -29.2 Now let's figure out which boxes to check: Does -286/5 = -291/5? Yes! Simplify: -286/5 = -28 + -6/5 = -28 + -11/5 = -291/5 Does -29.25 = -291/5? No -29.25 = -291/4 Does -29.2 = -291/5? Yes! -29.2 = -292/10 = -291/5 Does -291/5 = -291/5? Yes! Does -291/4 = -291/5? No The answer is -286/5 -29.25 -29.2 -291/5 -291/4
The red dot is between -30 and -29 so it has a fractional or decimal value.
-29 + ?/?
-29 + ?/5
-29 + -1/5
Now let's figure out which boxes to check:
Does -286/5 = -291/5? Yes! Simplify: -286/5 = -28 + -6/5 = -28 + -11/5 = -291/5 Does -29.25 = -291/5? No -29.25 = -291/4 Does -29.2 = -291/5? Yes! -29.2 = -292/10 = -291/5 Does -291/5 = -291/5? Yes! Does -291/4 = -291/5? No
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