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151.

Write the ratio of 200 mL to 2.5L in simplest form.

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ANSWER :`2:25`
152.

How many 7-digit numbers are there?

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ANSWER :9000000
153.

Calculate data of 6 observations with mean as 10. {:("Across",,"Down"),("2. Information in numerical form",,"1. Data can be represented in pictures."),(5.360^(@)"times the ratio of copponent value and the sum of values of all components",,"3. In pie chart, the value of component is proportional to this"),("6. Circle is divided like these to represent a data",,"4. Thses are the parts of a kind of a graph"),("8. Angle of all sectors together",,"7. Data represented as a line"),("10. In bar graph the value of the data is proportional to this",,"9. In bar graph all bars are equal in this"),("11. Circular graph",,),("In this graph, data is converted into rectangles",,):}

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Solution :Mean = 10
Number of observations=6
10=Sum/6
Sum = 60
One of the ways to OBTAIN observations is we can write NUMERAL 10 SIX times with sum 60.
Hence, the observations are 10,10,10,10,10,10
154.

Find the prime factorisation of the numbers given below: 127008

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ANSWER :`2 XX 2 xx 2 xx 2 xx 2 xx 3 xx 3 xx 3 xx 3 xx 7 xx 7`
155.

If 7 xx 5= 35 and 35 xx 3= 105, then state True or False for the following statements 105 is a factor of 3

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ANSWER :F
156.

Add : -7+2

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SOLUTION :`(4)-7+2=-5`
157.

Write the different names of the line in the given figure :

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Solution :LINE I, line AB, line AC, line AD, line BC, line BD, line CD.
158.

A bookstore sold books worth Rs. 2,85,891 in the first week of June and books worth Rs. 4,00,768 in the next week. How much was the sale in the two weeks together? In which week was the sale greater and by how much?

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Answer :RS. 6,86,659; Rs. 1, 14, 877 (2ND WEEK)
159.

State if the result is always odd or always even: Two prime numbers greater than 2 are added

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ANSWER :EVEN
160.

Select the right answer: The successor of 2390 is (i) 2399 (ii) 2391 (iii) 2389

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ANSWER :2391
161.

Find the solutionof the following equations by trial-and-error method. 11+x=19

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ANSWER :8
162.

Which is larger? 1/(31)or22/(39)

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ANSWER :`22/(39)`
163.

What fraction of the natural number from 110 to 115 are prime?

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ANSWER :` 1/(14)`
164.

State which of the following are algebraic expressionsand which are arithmetic expressions. a. 22x-11a b. 6xnp c. 12+(5xx4)-15 d. 5 e. s

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ANSWER :a., b., e. are ALGEBRAIC expressions; C., d. are ARITHMETIC expressions
165.

A _____________is used to represent a point.

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DOT
LINE
line SEGMENT
Ray

Answer :A
166.

Find the difference of the following : {:(a.,23 - (7),b.,54 - (32),c.,83 - (-71)),(d.,43 - (-89),e.,39 - (-72),f.,(-89) - (-12)),(g.,(-81) - (50),h.,(-32) - (-13),,):}

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Answer :`{:(a.,16,b.,22,c.,154),(d.,132,e.,111,F.,-77),(G.,-131,h.,-19,,):}`
167.

Find if the given fractions are equivalent: 5/(6), 15/(16)

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ANSWER :No
168.

A delivery man has to deliver packets to four houses which are numbered as on a number line. He has packets for house numbers 9, -8, -3 and -12. If he has delivered the packet at house no. 9, write the order in which he should deliver the packets to minimise his walk.

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Answer :After DELIVERING the packet at flat 9, the delivery man should deliver PACKETS at FLATS -3, -8 and -12 respectively.
169.

Convert into mixed numbers : 11/8

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SOLUTION :
170.

Solve the following problems. Veena has some beads. She wants to make necklaces with an equal number of beads in each. If she makes necklaces of 16, 24 or 40 beads, there is no bead left over. What is the least number of beads she must have ?

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SOLUTION :VEENA MUST have 240 BEADS.
171.

Evaluate the following:

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ANSWER :a. 21 B. 22 c. 27 d. 2
172.

Find the product using distributive property of multiplication. 283xx97

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ANSWER :27451
173.

A line segment has _________ end points.

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0
1
2
4

Answer :C
174.

Estimate the following (rounding off each number to its greatest place): 65xx87

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ANSWER :6300
175.

Write the following improper fractions as mixed fractions: 105/(13)

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ANSWER :`8(1)/(13)`
176.

Evaluate: 21+7+7-11-14

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ANSWER :10
177.

The radius of a circle is _______________ its diameter.

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ANSWER :HALF
178.

Evaluate: 59-32+12-11

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ANSWER :28
179.

Find the difference: 4(9)/(12)-3(8)/(14)

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ANSWER :`1(5)/(28)`
180.

Risthita and Lohitha are twins. They play a game, in which they open a page of a text book printed in English. From the first letter of the page. Risthita strikeevery 18th letter. If they strike the same letter 17 times in the page, then find the minimum number of letters in the page seme letter 17 times in the page, then find the minimum number of letters in the page selected.

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SOLUTION :LCM of 12,18:

`:.` Both of them strike EVERY 36 letter of the page.
`LCM=2xx3xx2xx3=36`.
Since both of them strike 17 TIMES, the page should contain at least `36xx17=612` letters.
181.

Two water tanks havecapacitires 30 litres and 18 litres, respectively. What is the highest measure of a measuring cylinder which can exactly measure the water of both the tanks when the tanks are full?

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`5` LITERS
`9` liters
`8` liters
`6` liters

Answer :D
182.

Kusumtai bought 80 cookers at ₹ 700 each. Transport cost her ₹ 1280. If she wants a profit of ₹ 18,000, what should be the selling price per cooker?

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SOLUTION :KUSUMTAI should SELL each COOKER at ₹ 941.
183.

Subtract : 200.005-17.186

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SOLUTION :
184.

Evaluate using BODMAS: (15-8)xx(12+1)

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ANSWER :91
185.

Divide 20 pens between Sheela and Lata in the ratio 3:2.

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ANSWER :8 PENS
186.

Evaluate: a. 144-:6xx3+8-40 b. 21xx6-:7+12-15 c. 72-:9xx5-12+7 d.14+6xx9-32-:4 e. 25-6xx9-:3+8 f. 1xx1-1+1+1+1xx0-1

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Answer :a. 40 b. 15 C. 35 d. 60 E. 15 f. 1
187.

Write first five multiples of 8

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Answer :`8, 16, 24, 32, 40`
188.

Arrange the fractions in descending order: 7/(12), 11/(15), 35/(42)

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Answer :`35/(42), 11/(15), 7/(12)`
189.

Write the rule for the perimeter of a regular septagonwhose side is of length m cm. Also, use the rule tofind the perimeter of a septagon with side 12 cm.

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ANSWER :7M, 84 CM
190.

A chord divides a circle into two parts . The smaller part is called the __________

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ANSWER :MINOR SEGMENTS
191.

Estimate the following: a. 77xx89 b. 654xx358 c. 62xx4651

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a. `7,900`
B. `2,000`
C. `3,00,000`
a. `7,200`
b. `2,80,000`
c. `3,00,000`
a. `7,200`
b. `7,80,000`
c. `3,000`
a. `9,200`
b. `2,80,000`
c. `5,00,000`

ANSWER :B
192.

I am the smallest number with five different prime factors. What number am I?

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ANSWER :2310
193.

Write the successor of: 21,29,999

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ANSWER :21,30,000
194.

Write the mixed fractions given below as improper fractions: 5(2)/(3)

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ANSWER :`17/(3)`
195.

How many lines can be drawn to pass through (i) a given point(ii) two given points(iii) three given points?

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ANSWER :(i) infinitelymany(II) ONE only(III) THREE
196.

How many numbers are there with: 9-digits

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ANSWER :90,00,00,000
197.

If x is one-ninth of y, then find 'a' such that x :y =12 :a

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ANSWER :`a. a = 54 B. a=108 `
198.

Write two negative integers greater than -31.

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ANSWER :`-30, -29`
199.

If 8 pencils cost Rs 24. find the price of 2 dozen such pencils.

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ANSWER :RS 72
200.

Draw line l. Take any point P outside the line. Using a set square, draw a line PQ perpendicular to line l.

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SOLUTION :