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Home › Grade7 › Grade 7 Olympiad › Math Olympiad-Grade-7 › Calculations › Calculations Worksheet-23

Calculations Worksheet-23

Calculations Worksheet-23

 

  1. simplifies to:

(a) 350               (b) 785               (c) 1220             (d) 1320

 

  1.  

(a)                   (b) 290               (c)               (d) 4

 

  1.  

(a) 6                    (b) 20                 (c) 91                  (d) None of these

 

  1. The value of is :

(a)                    (b)                 (c)                 (d) 1

 

  1. is equal to :

(a) 24                  (b) 32                 (c) 44                  (d) 100

 

  1. The value of is equal to :

(a) 0                    (b)                   (c)                    (d) 1

 

  1. The highest score in an inning was of the total and the next highest was of the remainder. If the scores differed by 9, the total score was :

(a) 110                (b) 121                (c) 132                (d) 143

 

  1. Rahul owes Rs. X and gives a Rs. 50 note in payment. He receives the following change : 3X fifty–paise coins, 14 ten–paise coins and 4X five–paise coins. X is equal to :

(a) 12                  (b) 16                  (c) 18                  (d) 22

 

  1. David gets on the elevator at the 11th floor of a building and rides up at the rate of 57 floors per minute. At the same time, Albert gets on an elevator at the 51st floor of the same building and rides down at the rate of 63 floors per minute. If they continue travelling at these rates, then at which floor will their paths cross ?

(a) 19                  (b) 28                 (c) 30                  (d) 27

 

  1. N number of persons decided to raise Rs. 3 lakhs by equal contributions from each. Had they contributed Rs. 50 each extra, the contribution would have been Rs. 3.25 lakhs. How many persons are there ?

(a) 400               (b) 450

(c) 600               (d) Cannot be determined

 

  1. Free notebooks were distributed equally among children of a class. The number of notebooks each child got was one–eighth of the number of children. Had the number of children been  half, each child would have got  16 notebooks. Total how many notebooks were distributed ?

(a) 256               (b) 432               (c) 512                (d) 640

 

  1. A classroom has equal number of boys and girls. Eight girls left to play kho–kho, leaving twice as many boys as girls in the classroom. What was the total number of girls and boys present initially ?

(a) 16                  (b) 24

(c) 32                  (d) Cannot be determined

 

  1. After distributing the sweets equally among 25 children, 8 sweets remain. Had the number of children been 28, 22 sweets would have been left after equally distributing. What was the total number of sweets ?

(a) 328               (b) 348               (c) 358               (d) Data inadequate

 

  1. In a regular week, there are 5 working days and for each day, the working hours are 8. A man gets Rs. 2.40 per hour for regular work and Rs. 3.20 per hours for overtime. If he earns Rs. 432 in 4 weeks, then how many hours does he work for ?

(a) 160                (b) 175                (c) 180                (d) 195

 

  1. A sum of Rs. 312 was divided among 100 boys and girls in such a way that each boy gets Rs. 3.60 and each girl Rs. 2.40. The number of girls is :

(a) 35                  (b) 40                 (c) 60                  (d) 65

 

  1. Each boy contributed rupees equal to the number of girls and each girl contributed rupees equal to the number of boys in a class of 60 students. If the total contribution thus collected is Rs. 1600, how many boys are there in the class ?

(a) 25                  (b) 30                 (c) 50                  (d) Data inadequate

 

Answer Key:

(1)-(c); (2)-(a); (3)-(c); (4)-(b); (5)-(d); (6)-(c); (7)-(b); (8)-(c); (9)-(c); (10)-(d); (11)-(c); (12)-(c); (13)-(c); (14)-(b); (15)-(b); (16)-(d)