Maths For Kids

Competitive Exam Preparation :  Label : Maths for Kids , Maths Puzzle , Brain Tester ,  Maths Question , series and pattern, Maths Problems , Maths worksheet , LCM HCF , Algebra, Bank PO exam, SSC Exam , number pattern , Maths Olympiad, Grade 5 maths puzzle ,  Mental Maths , Maths worksheet, competitive exam questions , reasoning question. Answer 1 : Answer 2 :  C Answer 3 :  B Answer 4 : B  use formula a3 - b3 Answer 5: C Answer 6 : A 25% Answer 7 : B Answer 8 : D   10% student failed both Answer 9 :  C     LCM of 48, 72 and 108 Answer 10 : A   Diagonal of square = Dia of circle and to find side apply Pythagoras Theorem Answer 11: D put n = 0 Answer 12 : B calculate HCF Answer 13 :  D Answer 14 : A Answer 15 : C soon i will update

Question : 1) A water tank is 3/4 full. When drawn 50 litre of water from it , tank is 5/8 full now . The capacity of the tank is ? 2) Two equal containers are filled with a mixture of milk and water . The concentration of milk in each container is 80 and 75 percentage respectively . If both containers mixed what will be the ratio of water to milk ? 3) Write  given fractions  in descending order  5/4 , 3/4 , 4/3 , 7/9 , 8/11 4) Express 20 minutes as a fraction of 2 hours ? 5) A 3/5 of jar is filled with water . This amount is equal to 6 full glasses . When 1/2  glass of water  is drunk . what fraction of the jar is still have water ? 6) If E = 10 and BAT = 46 then BOOK = ? 7) Q is located at north-west of P . Also R is located at east of Q and north -east of P. Now S is located to south of R in line with P and Q . In which direction of P is S located ? 8) If the average of 5 numbers is 28 . The average of first three numbers is 30 then what is the sum of last two numbe

Question : 1) The sum of the prime factor of 63 ? 2) How many right angles are there in 4 complete turns ? 3) If ( K - 8 ) is the HCF of 56 and 84 , then the value of K? 4) Complete the series  1 , 4  , 2  , 8  , 6 , 24 , 22 , 88 , __ ? 5) If one third of the tank hold 60 litres of water , then the quantity of water that half of the tank holds 6) Five electronics devices make a beep after every 30 minutes , 45 minutes , 1 hour 10 minute , 1 hour 15 minutes and 1 hour 45 minutes respectively . If all the devices beeped together at 10 O'clock then will together at what time ?   ( Clue : Find LCM ) 7) How many minimum squares must be shaded to make the given figure symmetric ? 8) Find the Area  and Perimeter of the given figure 9) Express 15 seconds as a percentage of 4 minutes 15 seconds 10)  Find the lowest number which when divided by 112 , 140 and 160 leaves a remainder 5 in each case ( clue LCM + 5 ) 11) A , B and C walk around a circular path . Their

Question : Aishi was facing the library at the beginning. She turn clockwise to face South-East .                    What angle did she turn through ? North | | |                                                       Library______________ | | | ================================== Question : In the given figure , the area of the shaded square is  196 square cm . What is the perimeter of rectangle PQRS ? ======================================= Question : The difference between the ( sum of third  multiple of 18 and                     the sixth multiple of 12 ) and sum of factors of 24 is __________? Answer: 66 Question : Aishi takes 3 minute 10 seconds to finish the reading of one page of  her textbook . If                  there are 70 pages , how long will she take to finish reading it ? ======================================== Question : Which statement is incorrect                  1) The place value of digit 5 in the number 745219 is

Question : Albert and Bernard just become friends with Cheryl , and they want to know her birthday is .Cheryl gives them a lsit of 10 possible dates May 15                       May 16                        May 19 June 17                       June 18 July 14                        July 16 August 14                   August 15                  August 17 Cheryl then tells Albert and Bernard separately the month and day of her Birthday respectively Albert : I do not know when Cheryl's birthday is , but I know that Bernard does not know too. Bernard : At first I do not know when Cheryl's birthday is , But I know now. Albert : Then I also know when Cheryl's birthday is So when is Cheryl's birthday is Answer : July 16 Solution :   From first statement of Albert is is clear that birthday is in either July or August months   From Bernard statement it is clear that day is not 14, so left out options are July 16 , August 15 and August 17 Now as Albert

Fill in the blanks 1) 2, 5 , 26 , 677 , ............. 2) 3 , 7 , 14 , 32 , 58 ,..................... 3) 7 , 9 , 12 , 14 , 17 , 19 , ................... 4 ) 1 , 0, 5 , 8 , 17 , 24 ,37 ...................... 5) 210 , 195 , 175 , 150 , 120 .................. 6 ) 3 , 7 , 13 , 21 , 31 .................. 7 ) 10 . 20 , 10 , 9 , 21 , 11 , 8, 22 , 12 ................. 8 ) 20 , 32 , 45 , 59 , 74  , ...................... 9 ) 17 , 14 , 15 , 12 , 13 , 10 ............... 10 ) 2 ,10 , 30 , 68 ..................... 11) B2 , E5 , I9 , N14 , ...................... 12 ) aab__ab__cabcca__bcab__c 13 ) gfe__ig__eii__fei__gf__ii 14)ab__bcbca__ __ c __ bab 15) A , CD , GHI , ___________ , UVWXY Label : Maths for Kids , Maths Puzzle , Brain Tester ,  Maths Question , series and pattern, Maths Problems , Maths worksheet , LCM HCF , Algebra, Bank PO exam, SSC Exam , no pattern Mental Maths , Maths worksheet, competitive exam questions , reasoning question. 

Question : A can complete the work in 12 days and B can complete the same work in 15 days . Both started the work together but after four days A left the work . In how many says work will be completed ? Solution : Let work is completed in X days  Fraction of work done by A + Fraction of work done by B = 1 ( 4/12) + (X/ 15) = 1 X = 10 days ============================================ Question : Pipe A an fill the tank in 25 hours while B alone an fill it in 30 hours and Pipe C can empty the tank in 20 Hours . If all the pipe  is open together , after how much time tank will be full ? Solution :   In one Hour Fraction by which tank will be filled = (1/25)+(1/30)-(1/20)                                                                                         = (350 / 15000)                            Tank will be full in = 15000 / 350 = 42.85 Hours =================================================== Question : A and B can finish the work in 10 days while B and C c

Question :  If Rower rows 18 Kms upstream  and 30 Kms in downstream in 3 Hours each time then what is the speed of stream ? Answer : 2 Km/ Hr ============================== Question : A train takes 15 second to pass through station 120 m long and 18 seconds to pass through completely another station 162 m long . What is the length  of the train ? Answer  :  90 Metre ============================== Question : A man standing on a platform which is 150 m long . He noted that train cross the platform in 20seconds but himself  in 8 seconds. Find the Speed of the train ? Answer 12.5 metres / seconds =============================== Question : A man walking with 3/4 of his normal speed . He got late by 1/2 hour. Find the duration of walk with normal speed ? ============================== Question : A man travels half of journey with 80 Km / hr and rest half of the journey with 60Km/hr  then what is the average speed ?              If total travelling time is 5 Hour

Question : If surface area of large cube is four times of smaller cube then how many smaller cubes can be formed from the material obtained by melting a larger cube. Solution : Let larger cube side is X and and smaller cube is Y then Square of (X/Y) = 4 or X/Y = 2 Cube of ( X/Y) = 8 so eight smaller cube can be formed ====================================================== Question : ABCD is parallelogram as shown in above figure. P, Q , R ans S are points as shown in figure.  If area of ABCD is 36 square cm and DR = AP then What is the area of quadrilateral ? ========================================================= Question : The volume of the cube is 27 cubic CM then what is total length of its edges ? Solution : Cube Volume = 27 so edge = 3    total 12 edges so total length 36 CM ====================================================== Question : The sides of triangles are in ratio of 1/4 : 1/3 : 1/2 . If the perimeter of triangle is  26 cm

Question : An investor gives money Rupees 10,000 partly to X and Y at 6 % and 10 %  interest rate respectively. If investor earn 750 Rupees in a year . What amount he gave to person Y ? Answer  Rupees 3750 Easy Method                                                                                         So investor gives money to X and Y in ratio of 3 : 5 So Y get = 5* 10000 / (3 + 5) = 6250 ============================================================== Question :  A and B are two alloys of zinc and copper has ratio of metals 3:2  and 7:8  respectively. If equal quantities of alloys are melted to form third alloy then what will be the ratio of zinc and copper ? Zinc in Alloy A = 3 out of 5 ( 3 + 2 ) Zinc in Alloy B = 7 out of 15 ( 7 + 8 )  Same Quantity of alloy mixed so LCM of 5 and 15  which is 15 15 Alloy A and 15 Alloy B mixed Total Zinc in Third Alloy = (3 x 15 / 5)  + 7 = 16 out of 30 Total copper in third alloy = 30 - 16 = 14

Question 1) The sum of the age of a mother and her daughter is 50 years . Also 4 years ago , the mothers age was 6 times the age of the daughter. What are the present age of the mother and daughter? Answer :  Let mother present age X and daughter age is Y                     X + Y = 50    --------------1                        X-4  = 6 ( Y -4)                         6Y - X = 20 -----------------2                  adding 1 and 2                    7Y = 70          So daughter present age 10 and mother age is 40.                                                   Total + Number of year ago ( Times -1 ) Daughter Age = -------------------------------------------------------------------------------------                                                                          Times + 1 =============================================================== Question : The ratio of the age of the father and son at present is 4 : 1 , and before 4 years the ratio was 6:1 . Wh

Question :  Four friends started running from same point at same time around the ground in clockwise direction. Time taken by the friends to complete one round are 60 seconds , 75 seconds , 90 seconds and 80 seconds. After what time will they all again at the starting point ? Answer : LCM of ( 60 , 75 , 90 , 80 ) seconds = 3600 seconds = 6 Minutes         ==============================================      Question : Indian meteorological department recorded the temperature of various city on 01 March as shown in map Pl answer the following : A) Which city has the highest temperature ? B) What is the max temperature difference between Chennai and Mumbai ? ====================================================================  Question : Aishi went to shop to purchase stationary items. Items prize are shown in figure                  Answer the following question A) Aishi paid 20 Rupees and bought three things  What did Aishi buy ? B) Aishi paid 12