Question

Matas
Q.1. Multiply 105 by 57 using a property of integers.
Q.2. Find the integer which when divided by -1 gives -84.
Q.3.
A rock climber started at +500m and came a distance of 150m down the rock
face. How far above sea level was he then.
Q.4.
Find the integer whose product with -2 is -50.
Q.5. By which integer 201 must be divided to get the quotient-201.
Q.6. At mid-night the temperature was -10°C one hour later is was 4°C warmer what
was the temperature then?
Q.7. Product of two integers is -120. One integer is -30. Find the other.
Q.8.
Simplify [(-6) + 5] -[(-2) + 1].
Q.9.
Find using property:
(a) -194 x 143 + (-194) x 57
(b) 256 x 373 - 256 X (-73)
0.10. In a dass test (3) marks for every correct and (-2) for every incorrect answer
no marks for not attempting (1) Mohit Scores - 5 marks in the test though he got
7 correct answers. How many questions has he attempted incorrectly?
Find the value of
in each of the figure given below:-
​

Answer 1

2. -1×84=-84

3.500-150=350

4. -2×25=-50

5. 201/-1=-201

6. -10+4=-6

7. -30×40=-120

8. [(-6) + 5] -[(-2) + 1]

(-1)-(-1)

-1+1

0

9. a)-194 x 143 + (-194) x 57

a×b+a×c=a×(b+c)

-194×(143+57)

-194×200

-38800

b) 256 x 373 - 256 X (-73)

a×b-a×c=a×(b-c)

256×(373-(-73))

256×(373+73)

256×446

114176

10. 7 correct answer=7×3

21

total marks 5

5=21-a

a=21-5

a=16

no of questions attempted incorrectly

16/2= 8

Hope it might help you