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प्रश्न
Evaluate:
`2 + (-3)/5`
उत्तर
`2/1 - 3/5`
(LCM of 1 and 5 = 5)
`= (2xx5)/(1xx5) - (3xx1)/(5xx1)`
`= (10-3)/5 = 7/5 = 1 2/5`
APPEARS IN
संबंधित प्रश्न
Represent these numbers on the number line
`7/4`
Represent `(-2)/11, (-5)/11, (-9)/11` on the number line.
Show the following numbers on a number line. Draw a separate number line for each example.
(1)`3/2 , 5/2 , -3/2`
(2)`7/5 , (-2)/5 , (-4)/5`
(3) `(-5)/8 , 11/8`
(4)`13/10 , (-17)/10`
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`.
The points S, Y, N, C, R, A, T, I and O on the number line are such that CN = NY = YS and RA = AT = TI = IO. Find the rational numbers represented by the letters Y, N, A, T and I
Draw a number line and represent the following rational numbers on it
`9/4`
Draw a number line and represent the following rational numbers on it
`15/(-4)`
The rational numbers `1/3` and `(-1)/3`are on the ______ sides of zero on the number line.
The rational number `7/(-4)` lies to the right of zero on the number line.
Find a rational number exactly halfway between:
`1/15` and `1/12`
