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Mental Calculations - Algebra

Authored by Bulusu Srinivas

Mathematics

8th Grade

Used 2+ times

Mental Calculations - Algebra
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15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If y=7,find the value of 2(y+4)

11
22
20

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If a=6 and b= 7,find the value of 15-a-b

2
3
4

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

When x = 3, y = 6 and z = 7, find 2x - z

-1
-2
-3
-4

4.

FILL IN THE BLANKS QUESTION

30 sec • 1 pt

Given x=5x=5  and y=−2y=-2  

Evaluate 2x−5y2x-5y  

(a)  

5.

FILL IN THE BLANKS QUESTION

30 sec • 1 pt

Given a=3a=3   and b=−2b=-2  

Evaluate 3ab3ab  

(a)  

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

If a = 4 and b = 6, what is the value of 3a + 5b?

40
42
44
46

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

If x = 5, find the value of 7x-1.

34
36
35
37

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