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प्रश्न
Evaluate:
`4 + 3/(-5)`
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.
`-5/6`
Observe the number line and answer the questions.
- Which number is indicated by point B?
- Which point indicates the number `1 3/4`?
- State whether the statement ‘the point D denotes the number `5/2`’ is true or false.
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:
`5/9 + (-7)/6`
Draw a number line and represent the following rational numbers on it
`15/(-4)`
The rational numbers can be represented on the number line.
The rational numbers `1/2` and `- 5/2` are on the opposite sides of 0 on the number line.
On a number line, `4/3` is to the ______ of zero (0).
Find a rational number exactly halfway between:
`(-1)/3` and `1/3`
Find a rational number exactly halfway between:
`1/15` and `1/12`
