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प्रश्न
Evaluate:
`4 + 3/(-5)`
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उत्तर
`4/1 + 3/(-5)`
= `4/1 - 3/5`
= `(4xx5)/(1xx5) - (3xx1)/(5xx1)` (LCM of 1 and 5 = 5)
= `(20-3)/5 = 17/5 = 3 2/5`
APPEARS IN
संबंधित प्रश्न
Represent these numbers on the number line
`7/4`
Represent these numbers on the number line.
`-5/6`
The number `sqrt2` is shown on a number line. Steps are given to show `sqrt3` on the number line using `sqrt2`. Fill in the boxes properly and complete the activity.
Activity :
- The point Q on the number line shows the number ______.
- A line perpendicular to the number line is drawn through the point Q. Point R is at unit distance from Q on the line.
- Right angled ∆ORQ is obtained by drawing seg OR.
`l ("OQ") = sqrt2` , `l("QR") = 1`
`therefore` by Pythagoras theorem,
`[l("OR")]^2 = [l("OQ")]^2 + [l("QR")]^2 `
= `square^2`+ `square^2` = `square` + `square`
= `square`
∴ l(OR) = `square`
Draw an arc with centre O and radius OR. Mark the point of intersection of the line and the arc as C. The point C shows the number `sqrt3`.
Evaluate:
`5/(-11) + 0`
Find the rational numbers represented by the question marks marked on the following number line
Find the rational numbers represented by the question marks marked on the following number line
The rational number `(-8)/(-3)` lies neither to the right nor to the left of zero on the number line.
The rational numbers `1/2` and –1 are on the opposite sides of zero on the number line.
Find a rational number exactly halfway between:
`5/(-13)` and `(-7)/9`
Find the odd one out of the following and give reason.
