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ClickN KIDS Beginning Reading & Spelling Programs
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FIFTH GRADE /ADDITION / TEST 1.2

MATHEMATICS IS EASY. PROVIDED THAT ONE WORKS ENOUGH.
ENOUGH IS SKILL DEPENDENT, HAVE TO FIND "ENOUGH" FOR YOUR SIZE.

SOME OF OUR QUESTIONS ARE REALLY HARD, FOR THOSE THAT ARE SKILLED IN MATH.
SKIP THEM IN CASE NOT FOR YOU.

IF YOU DESIRE SO, WE CAN DISCUSS HARD/INTERESTING QUESTIONS IN OUR FORUM.

 THE ADDITION OPERATION IS,

  TO COUNT FORWARD FROM  A SUMMAND

 ♦ 
AS MANY AS ANOTHER SUMMAND
OR BETTER SAID

   ♦  IT IS THE METHOD(S)   
OF FINDING THE RESULT OF THIS  UPCOUNTING.
1. How many of the following operations do have error ?

390944+728=390283   321+233=555   555+260=815   770+2111=2881


a) 1
b) 2
c) 3
d) 4
Check by mod-9 counting and even/odd .
2. What should the value of A be if [(1+9)+(1+9) + (Ax6+25)] = 122 + (1+10) + 10 ?

a) 108
b) 18
c) 28
d) 8
6xA = 108 implies ... .
3. 5 friends , Jack, Joe, Jim, Charles and Samuel are standing respectively on 6. , 7., 8., 9. and 10. triangular numbers.
What will be the sum of the numbers Jack and Samuels' friends do stand on ?

!


a) 155
b) 109
c) 164
d) 182
n. triangular number is the sum of integers from 1 to n.
4. How many couples of numbers giving a sum of 219 are there among the 3-digit numbers ?

a) 27
b) 9
c) 32
d) 10
Do remember the restriction "3-digit".
The couples 107-112 and 112-107 are the same, unorderd forms are considered.
5. Which of the followings is wrong ?

a) Bases, places (place values) and triplet groups (thousands, millions etc.) do effect the way we add .
b) It is possible to add even huge numbers by counting forward.
c) Since addition is a binary operation we may define the first summand as "increasing" and the second as "increaser" and we may exchange them if we want.
d) To check an addition we subtract one of the summands from the sum.
Definitions "increasing" and "increaser" may have some (small) benefits.
y
6. A 3-digit number whose tens'place is 0 and the digits reversed form of this number are added. What can be said about the sum ?

!
In case of need for tips get the cursor on "y" or for help click at "ry1/2" .
RY1 RY2



a) It is 101 times the sum of the digits at hunderts' and ones' places.
b) It is 110 times the sum of the digits at hunderts' and ones' places.
c) It is 111 times the sum of the digits at hunderts' and ones' places.
d) It is 111 times the digit at hunderts' places.


Please have a look at ry1.
ClickN KIDS Beginning Reading & Spelling Programs Teacher Created Resources ClickN KIDS Beginning Reading & Spelling Programs
7. Which result we obtain if we calculate the sum of 1577 and 2367 with a calculator which displays 5 instead of 4 ?

a) 3735
b) 3055
c) 3755
d) 3955
Only display error .
8. What will be the sum of 999. and 1000. square numbers ?

!


a) 998001
b) 1998001
c) 1999001
d) 9098001
10002 + (1000-1)2 is being asked. Either calculate as 1000x1000 + 999x999 or have a look at 2nd y.
(1000-1)2 = (1000-1)x(1000-1) = 1000000 - 1000 - 1000 + 1 = 1000000 - 2000 + 1 = 998001
9. A, B and C are digits. Which values should they have if the equality 17A + 1BA + CBA = 725 is to be valid ?

a) 5 , 7 and 3
b) 5 , 3 and 4
c) 4 , 3 and 5
d) 4 , 6 and 7


Write in the form:
17A
1BA
CBA
and evaluate .
It is easily seen that A must either be 0 or 5. So only two choices are possible. Try to guess the right one or use trial-error.
10. A, B and C are digits. Which values should they have if the equality 7A4 + 9A3 + 92B = CA48 is to be valid ?

a) 6 , 1 and 2
b) 6 , 3 and 1
c) 3 , 6 and 5
d) 3 , 4 and 1
Use the same method as in the previous question. It is easily seen that B = 1 .
11. (2500 + 5 x 227) + ( 88 + 44 x 22) = ?

a) 6488
b) 4781
c) 4691
d) 4357
2500 + 1135 + 880 + 176 = ?
y
12. The sum of a 3-digit number and its digits in reversed order form is wished to be 404. How many cases are possible ?


In case of need for tips get the cursor on "y" or for help click at "ry1/2".

RY1 RY2



a) 5
b) 3
c) 2
d) 7
Tens' of this number should be 0 . If sum is to be 404 ones' and hundreds should be less than 4 that produces no carry. Any carry would break the symmetry and 5 in the middle is prohibited.
You may find the answer by trial and error but try to use the mathematical method.
13. In a public telephone booth, 334 calls are made before noon and 328 calls are made after noon. The number of additional charge free calls made between 20:00 and 8:00 AM is 525.
Find the number of calls made in a day. ?

!


a) 1197
b) 1187
c) 1195
d) 1087
Just simple addition of 3 3-digit numbers .
14. Daghan played a game via Facebook and scored 1453 points in first level, 1673 points in the second level, 2221 in the third level and 1723 in the fourth level after which the game was over.
If he was able to gain 1457 points more, he would have scored the highest score of the day.
How many points would then make him the champion of the day ?

!


a) 8 527
b) 4 096
c) 8 192
d) 9 096
Again simple ddition is needed, addition of 5 numbers .
15. What will be total height of Mount Everest and Mount Klimanjoro if thir heights are 29 028 and 19 340 feet respectively ?

!


a) 55 795 feet
b) 56 785 feet
c) 48 368 feet
d) 54 387 feet
Calculate as E + K .
16. 7 millions 5 hundred thousands 4 ten thousands 5 thousands 3 hundreds 8 tens and 7 ones = ?

a) 7 545 837
b) 7 455 837
c) 7 555 387
d) 7 545 387
17. Jane's daghter will be 17 this weekend. If Jane just turned 40 years old and her husband 5 years older, how big should the total age of this family be after 5 years ?

!


a) 107
b) 111
c) 119
d) 117
Remember that every member will get 5 years older .
y
18. Jane is as old as Jacqueline will be when Jane is 50 .
Jacqueline is as old as Jane was when Jacqueline was half the age Jacqueline will be 10 years from now.
How old are Jacqueline and Jane ?


In case of need for tips get the cursor on "y" or for help click at "ry1/2" .
!

RY1 RY2


a) 30 and 40
b) 35 and 50
c) 40 and 50
d) 50 and 40
Two equations and 2 unknowns; have a look at ry1 .
19. Mark is on the way to be a phylatelist, as a newbie he collects stamps. Jose takes half of one less than the number of stamps he has. At Mark's request, Liz decides to triple the rest of Mark's stamps. In the end, Mark has 27 stamps.
How many stamps did Mark originally have ?

!


a) 19
b) 29
c) 18
d) 27
Go in the reverse order, Liz should have given him 18 stamps .
20. Molly is writing her first book. She gradually gets better in machine writing and increases her speed by doubling the words she writes each month. Santa Claus has seen her ambition and promised to bring her a magic machine that will permit this increase of speed. She wrote 1 000 words last month. What will then be the total number of words she will happen to write in ten months including last month ?

a) 1 024 000
b) 512 000
c) 1 023 000
d) 256 000
1+2+4+8+16+32+64+128+256+512 = ? .
Take care of the fact: 1+2=4-1, 1+2+4=8-1, 1+2+4+8=16-1, 1+2+4+8+16=32-1 , ... .
21. Which of the graphs below in the figure may indicate the number of words Molly of previous question has written in the 1st, 5th and 9th months ?

!


a) B
b) C
c) A
d) D
Exponential growth is unbelievable, it increases unbelievably .
y
22. Jane is as old as Jacqueline will be when Jane is twice as old as Jacqueline was when Jane was 35 .
Jacqueline is as old as Jane was when Jacqueline was half the age Jacqueline will be 10 years from now.
How old are Jacqueline and Jane ?


In case of need for tips get the cursor on "y" or for help click at "ry1/2" .

!
RY1 RY2



a) 35 and 50
b) 40 and 50
c) 30 and 40
d) 40 and 60


Question 18 and 22 are indeed the same question and this is a good example of getting a harder question simpler or vice versa .
23. Judy was going to Euro-Disney from the States. To this end she travelled 3250km by plane, 150km by car and 50km by bus . How far is it from her house ?

!


a) 3 450
b) 3 550
c) 3 750 km.
d) 3 450 km.
Do never ignore the units in case of physical quantities .
24. What is the sum of the squares of the two nearest prime numbers to the number 62 ?

a) 8 210
b) 7 202
c) 4 956
d) 9 102
Be careful, these primes are not 61 and 67.
592 + 612 = 59x59 + 61x61 = 3481 + 3721.
25. 1090 is obtained if 1009 is added to a certain number. What will be obtained if 1334 is added ?

a) 1 415
b) 1 305
c) 1 315
d) 1 505
The number is 81 and 1334 should be added.
This is the feedback!

THANK YOU FOR YOUR VISIT; HOPE WE COULD BE OF USE.
FOR MUTUAL BENEFIT YOU MAY USE OUR FORUM.
© 2011 , İsmail GERMAN. ALL RIGHTS RESERVED
PLEASE PREFER GIVING LINK IF THAT SUFFICES

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