Challenging Maths (Whole Numbers)

7/25/2019 Challenging Maths (Whole Numbers)

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Numbers.

1. A is the smallest number which when rounded of to the nearest thousand gives 6000. B is the largest

number which when rounded of to the nearest thousand gives 6000. The diference between A and B isa) 998b) 999c) 1000d) 1998

. Add u! all the "actors o" 16. The results is

a) #b) #0c) #1d) 1$

#. T%shirts were being sold in sets o" two at & #9 !er set. 'ei (ing "ound that he could not bu more than

t%shirts with the amount o" mone he had. 'hich o" the "ollowing could !ossibl be the greatest amoun

o" mone 'ei (ing had*a) & +,b) & 1$$c) & 180d) & #0

+. -eter has saved some 0%cent coins and +# $0%cent coins. " he needs to save 1# more 0%cent coins in

order to bu a to that costs & ,.90/ how man 0%cent coins does he have now*a) 1+b) 19c) +d) 6,

$. 1# 6, a) 60 , 2 1#b) 60 , 1#c) 60 1# 2 , 1#d) 60 10 2 60 ,

6. (ar arranges 0 tooth!ic3s on a table as shown below. The tooth!ic3s are s!aced e4uall a!art. The

distance between the 1stand the +thtooth!ic3 is 1 cm. 'hat is the distance between the 1stand 0th*

a) 60 cmb) ,6 cmc) 80 cmd) +0 cm

,. A teacher gave + chocolates to each !u!il in his class and had no chocolate le"t. " there had been 100

more chocolates/ the !u!ils would have received 6 chocolates each and there would be chocolate le

5ow man chocolates were there in the bo*a) 88b) 10+c) 1$6d) $6

8. Bill has 1,0 stam!s. 7o has #, more stam!s than Bill. Three times the number o" stam!s Alan has is 1less than the number o" stam!s 7o has. 5ow man stam!s does Alan have*a) 6#b) 69c) ,$d) 60#

9. a) 'rite down the missing number in the !attern below.## 608/ ## ,08/ ## 908/ / #+ 608

b) ind the value o" the digit in the thousands !lace o" the number ou :lled in the blan3.

Answer ; a)

b)

10. 'hich o" the "ollowing when rounded of to the nearest thousand is +0 000*

0


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a) #, 000 2 1 999b) +1 +$9 < 000c) +1 000 < +91d) +1 000 < $01

11. a) The !roduct o" 1+ $, and + is .b) 'rite down the smallest $%digit number that can be "ormed using all the $ digits in the above result.c) ind the largest !ossible odd number that can be "ormed with the same set o" digits.d) 'rite down the diference between the answers obtained in b) and c).

Answer; a)

b) c)

d) 1. a) =ive a number that is both a "actor and multi!le o" 16.

b) 'rite down two numbers between 0 and #0 that have onl "actors.Answer; a)

b) 1#. There are 0 to +0 children in a class. The teacher is able to divide them into grou!s o" 6/8 or 1 childre

eactl. >?ach grou! would have the same number o" children.) 5ow man children are there in the

class*

Answer; 1+. @oo3 at the :gures below care"ull.

a) 'hat is the total mass o" B and *Answer;

b) 'hat is the mass o" obect *Answer;

1$. 'hen a certain number N is divided b 9/ the 4uotient is #+ and the remainder is 8. 'hat will be the

4uotient and remainder when the same number N is divided b ,*

Answer; 16. -ears are sold at # !ears "or & and mangoes are sold at mangoes "or & #. (rs @im bought an e4ual

number o" mangoes and !ears. Che !aid & 6 "or them. 5ow man !ears did she bu* >=uess the answ

using our 3nowledge o" common multi!les.)

Answer; 1,. Tom had & #88/ Dane had & 1+ more than Tom. A"ter Tom gave Dane some mone/ Dane had & 1$0 more

than Tom. 5ow much mone did Tom give Dane*

18. Dohn and Eit had a collection o" ,9 boo3s. A"ter Dohn gave 1$ boo3s to Eit/ he had $ boo3s "ewer than Eit

5ow man boo3s did Dohn have at :rst*

A

+3B AA

B

1+ 3g1$ 3g


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19. Bob had thrice as man !a!er cli!s as Favid. The number o" !a!er cli!s Bob had was onl twice the

number o" !a!er cli!s 7on had. " 7on had 6, !a!er cli!s/ how man more !a!er cli!s than Favid did

Bob have*

0. Dane had # times as man stic3ers as Am. Cusan had 8+ stic3ers than Dane. " Am and Dane had a total

o" 6, stic3ers/ how man stic3ers did Cusan have*

1. There were +#1+ men/ women and children in a hall. The number o" adults was times the number o"

children. There were +6 more men than women.a) 5ow man adults were there*b) 5ow man men were there in the hall*

. The cost o" a so"a was & $0 less than # times the cost o" a table. The total cost o" the so"a and the table

was & $0. ind the cost o" the so"a.

#. (rs. Tan !re!ared #90 ml o" uice. Che !oured an e4ual amount o" uice into each o" the 6 big cu!s and

60 ml less into each o" the + small cu!s and used u! all the uice eactl.

a) 5ow much uice did she !our into each big cu!*b) 7ound of our answer in !art a) to the nearest

i) 5undred ml/ii) Ten ml.

+. # identical ro!es and $ identical ribbons have a total length o" ,+# cm. The total length o" 1 ro!e and 1

ribbon is 191 cm. ind the length o"a) 1 ribbon


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b) 1 ro!e

$. 16,1 !eo!le visited a theme !ar3 on Caturda. The number o" visitors on Cunda was ,00 less than twic

the number o" !eo!le who visited on Caturda. The number o" visitors on Caturda was # times the

number o" visitors on (onda. 5ow man !eo!le visited the theme !ar3 on the # das altogether*

6. Fais had twice as man !encils as Culin at :rst. Then 7ose gave 8 !encils to Culin. A"ter that/ 7ose had

three times as man !encils as Culin. " Fais/ Culin and 7ose had 1#+ !encils altogether/ how man

more !encils than Fais did 7ose have at :rst*

,. Two containers and G contained the same amount o" water. 'hen 960 ml o" water was !oured out o"

container and ++8 ml was !oured out o" container G/ there was $ times as much water in container G

in container . ind the volume o" water in container at :rst.

8. The mass o" bo A and bo B is 88 3g. The mass o" bo B and bo is 16+ 3g. " bo is # times as

heav as bo A/ :nda) 5ow much heavier bo is than bo A*b) The mass o" bo B.

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Challenging Maths (Whole Numbers)