Question

Q1. Replace the blank by a suitable integer: (2)

______ x (- 3) = 36
63 ➗ _______ = (- 9)

Q2. (i) What is the sign of the product of 25 negative integers and 4 positive
Integers? (1)

(ii) 456 ➗0 = 0 (True/False). If False, write the correct statement. (1)


Q3. Evaluate using suitable property (Mention the property used): (3)

(−47) × 68 − (−47) × 38

(Show all steps in the working)

Q4. A submarine was situated 800 feet above sea level. If it ascends at the rate of 5 feet per minute, how much time will it take to reach 250 feet below sea level? (3)

answer these :> 50 points

Answer 1

Answer:

1.-12,-7

2. ,0 because any dividef by always be 0

3.(49)*68-(-47)*38

-3196+47*38

-3196*38

-119662

4.30 minutes

Answer 2

Answer:

Refer this ATTACHMENT

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