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Home › Grade7 › Grade 7 Olympiad › Math Olympiad-Grade-7 › Numbers › Numbers Worksheet-3

Numbers Worksheet-3

Numbers Worksheet-3

 

  1. A place is 45 m above the sea level and another place is 25 m below the sea level. What is the difference of the level between the two places?

(a) 70 m             (b) 20 m            (c) 60 m             (d) –20 m

 

  1. The value of (–2) × 5 × (–3) × (–2) × (–7) is

(a) –420            (b) 420               (c) –210             (d) 210

 

  1. The value of 12 – [7 – {16 –(18 – )}] is

(a) 3                    (b) 2                    (c) 1                     (d) 0

 

  1. The sign of the product of two unlike integers is

(a) Positive                                     (b) Negative

(c) Positive or negative                (d) Cannot be determined

 

  1. Every negative integer is ____ zero.

(a) Greater than                            (b) Less than

(c) Greater than or equal            (d) Less than or equal

 

  1. Simplify

(a) 15                  (b) 14                  (c) 13                  (d) 6

 

  1. What will be the sign of the product if we together multiply 199 negative integers and 10 positive integers?

(a) Negative                                   (b) Positive

(c) Can't say                                   (d) Data is insufficient

 

  1. Which of the following is true?

(a) The product of a positive and a negative integer is negative

(b) The product of a negative and a positive integer may be zero

(c) For all non-zero integers a and b, a × b is always greater than either a or b.

(d) None of these

 

  1. Simplify

(a) 87                  (b) 88                 (c) 89                  (d) 90

 

  1. Which of the following equations illustrates the identity property of addition?

(a) 5 – 5 = 0      (b) 5 + 0 = 5      (c) 5 ´ 1 = 5       (d) 5 + 1 = 6

 

  1. A farmer broguth 1,605 tomatoes to sell at a farmer’s market. He sold % of them at the end of the day. How many tomatoes were unsold?

(a) 545                (b) 935               (c) 1,070            (d) 1,080

 

  1. Mrs. Anush pays Rs. 284.9 in state taxes on a lawn mower he purchased. What is the cost of the lawn mower before taxes if states taxes are 9.25%?

(a) Rs. 2380      (b) Rs. 4680      (c) Rs. 2630     (d) Rs. 3080

 

  1. What is 120% of 920?

(a) 1104              (b) 900               (c) 1203             (d) 1056

 

  1. Tarun, Ashav and Bimal came to the Pizza hut for lunch. Their total bill was Rs. 530. If they want to leave a 15% tip, what will be their tip?

(a) Rs. 46.5       (b) Rs. 79.5       (c) Rs. 124.5      (d) Rs. 92.5

 

  1. What percent of 90 is 27?

(a) 30                  (b) 45                  (c) 60                  (d) 15

 

  1. In a company, out of 120 employees 12 got promotion in 2001. Which shows the percent of employees that did not get promotion in 2001?

(a) 95%              (b) 78%              (c) 10%               (d) 90%

 

  1. The original price of a laptop is Rs. 89000. If you get a 20% discount on the original price, how much will be deducted from the original price?

(a) Rs. 16750    (b) Rs. 66750   (c) Rs. 17800    (d) Rs. 22000

 

  1. Krish saved Rs. 3780. She spent 8% of it on her shoes and 45% on clothes. How much money did she have left?

(a) Rs. 2003.4                              (b) Rs. 1788.0

(c) Rs. 1776.6                                (d) Rs. 776.6

 

  1. A Plasma TV is on sale for Rs. 39000 which is a 35% discount off the regular price. Find the regular price of the TV.

(a) Rs. 56000                               (b) Rs. 6,0000

(c) Rs. 21000                                (d) Rs. 63710

 

  1. If 60 is 150% of a number, what is 75% of the same number?

(a) 40                  (b) 45                  (c) 60                  (d) 30

 

Answer Key:

(1)-(a); (2)-(b); (3)-(d); (4)-(b); (5)-(b); (6)-(a); (7)-(a); (8)-(a); (9)-(a); (10)-(b); (11)-(c); (12)-(d); (13)-(a); (14)-(b); (15)-(a); (16)-(d); (17)-(c); (18)-(c); (19)-(b); (20)-(d)