Math Videos for Grade 7

Algebra-Expressions and Equations - Grade 7 (Question: 1621051230) Locked

If * be an operation such that e*f = \(e^2 - f^2\) - ef, then 2*4 = ________

A. -18
B. -20
C. -25
D. -16

Algebra-Expressions and Equations - Grade 7 (Question: 1621051350) Locked

The number of days left in the month of June are half the number of days already passed. How many days are left in the month of June?

A. 10
B. 12
C. 16
D. 18

Algebra-Expressions and Equations - Grade 7 (Question: 1621049794) Locked

What is the value of \(ax^2 + bx + c\) if \(x = -\frac{b}{a}\)

A. \(b^2 - 4a\)
B. 0
C. c
D. None of these

Algebra-Expressions and Equations - Grade 7 (Question: 1621049990) Locked

A man lost 8% of his salary and spent 8% of the remaining. He still has Dhs130. Find his total salary.

A. Dhs1.53592
B. Dhs1535.92
C. Dhs153.592
D. None of these

Algebra-Expressions and Equations - Grade 7 (Question: 1621051432) Locked

If 5x + 2 = 47, what will be the value of 5x - 2?

A. 51
B. 49
C. 45
D. 43

Algebra-Expressions and Equations - Grade 7 (Question: 1621051565) Locked

If x = 2, solve 7 (6x + 8) + 6 (7 + (6 + 8)).

A. 266
B. 259
C. 263
D. 275

Algebra-Expressions and Equations - Grade 7 (Question: 1621051663) Locked

Find the equation which can describe the relationship between p and q.

A. q = 0.4p - 0.3
B. q = -0.4p - 0.3
C. q = -p + 0.9
D. q = p + 0.9

Algebra-Expressions and Equations - Grade 7 (Question: 1621051891) Locked

Adiva is setting up a factory to manufacture pens. If she buys a machine that costs Dhs18058, then she can manufacture a pen for Dhs2.8. On the other hand, if she buys a machine that costs Dhs12800, she can manufacture a pen for Dhs3.9. How many pen should she manufacture, so that total cost is the same no matter which machine she buys?

A. 4791
B. 4783
C. 4780
D. 4775

Algebra-Expressions and Equations - Grade 7 (Question: 1621052325) Locked

Multiply:

\(−4x^4y^5z^3\) by \(\frac{2}{5}x^5y^4z^3\)

A. \(\frac{8}{5}x^3y^9z^6\)
B. \(-\frac{1}{5}x^9y^9z^6\)
C. \(-\frac{8}{5}x^9y^{10}z^7\)
D. \(\frac{-8}{5}x^9y^9z^6\)

Algebra-Expressions and Equations - Grade 7 (Question: 1621052662) Locked

Atifa's father is 4 times as old as Atifa. After 14 years, her father will be 2 times as old as Atifa. What is Atifa's age now?

A. 9
B. 3
C. 2
D. 7

Algebra-Expressions and Equations - Grade 7 (Question: 1621052740) Locked

Find the difference between the smallest n digit number and the greatest m digit number. (Assume n > m ).

A. \((10^{n-1}-1) + (10^m+1)\)
B. \((10^{n-1}+1) - (10^m+1)\)
C. \((10^{n-1}+1) - (10^m-1)\)
D. \(10^{n-1} - (10^m-1)\)

Algebra-Expressions and Equations - Grade 7 (Question: 1621053066) Locked

What must be added in \(-9b^2 - 2b - 1\) to get \(-b^2 - 2b - 2\) ?

A. \(8b^2\)
B. \(8b^2 -1\)
C. \(8b^2 -2\)
D. \(8b^2 + 1\)

Algebra-Expressions and Equations - Grade 7 (Question: 1621052936) Locked

In an equation, we can drop a term from one side and put it on the other side with the opposite sign.

A. True
B. False

Algebra-Expressions and Equations - Grade 7 (Question: 1621053266) Locked

Atiya bought a total of 22 hens and ducks. She got a discount of Dhs0.30 for each hen and a discount of Dhs1.10 for each duck. She saved Dhs15.40 in total. How many hens did she buy?

A. 11
B. 12
C. 23
D. 22

Algebra-Expressions and Equations - Grade 7 (Question: 1621053480) Locked

Richard earns $ x daily and spends $ y per week. What are his savings of 4 weeks ?

A. 4x -28y
B. 28x -4y
C. 3x - 28y
D. 28x - 3y

Algebra-Expressions and Equations - Grade 7 (Question: 1621053592) Locked

What must be added in \(-4p^2 + p - 8\) to get \(9p^2 + 4\) ?

A. \(13p^2 - p - 12\)
B. \(13p^2 - p + 12\)
C. \(12p^2 - p - 13\)
D. \(-13p^2 - p + 12\)

Algebra-Expressions and Equations - Grade 7 (Question: 1621054293) Locked

Find the area of the following shape.

A. c(b-d) + ba + ef
B. a(b+d) - be - cf
C. f(b-d) - be + ca
D. a(b-d) + de + cf

Algebra-Expressions and Equations - Grade 7 (Question: 1621054519) Locked

Multiply:

\(2abe^5, 5a^5\), and 3abe

A. \(30a3b3e\)
B. \(30a5b2e\)
C. \(30a^7b^3e^5\)
D. \(30a^7b^2e^6\)

Algebra-Expressions and Equations - Grade 7 (Question: 1621054825) Locked

The side of an equilateral triangle is given as a . Find the perimeter of the equilateral triangle using a .

A. \(3 +a^3 \)
B. 3a
C. \(a^3 -1\)
D. \(3^a +1\)

Algebra-Expressions and Equations - Grade 7 (Question: 1621054963) Locked

Cost of  = $______

A. 17
B. 15
C. 13
D. 19