Multiplicative Identity

Q.

Solve:

$625\times (-35)+(-625)\times 65$

Q.

Solve using property: $-\frac{2}{3}\times \frac{3}{5}+\frac{5}{2}-\frac{3}{5}\times \frac{1}{6}$

Q.

Solve the equation $13(y-4)-3(y-9)-5(y+4)=0.$

Q. Use the distributive law to simplify and work out the following

(-4)*20-(-4)*15-(-4)*62+(-4)*97

Q.

Exponential form of 9 x 9 x 9 x 9 with base 3 is

1. 3⁴

2. 3⁸

3. 3⁶

4. 3⁹

Q. Determine B and C from the given equations?
$111\times 31-441=AA÷3000=BB-1=C$

1. Additive identity and multiplicative identity
2. 0 and 1
3. Multiplicative identity and additive identity
4. 0 and -1

Q. When we multiply any given integer with 1, the result is always ___________.

1. the same integer
2. 1
3. half the integer
4. double the integer

Q.

A number when multiplied by 6 is increased by 45, then the number is

1. 9

2. 3

3. 2

4. 4

Q. Solve this:
5. The temperature at 12 noon was 10^o C above zero. If it decrease at the rate of 2^oC per hour until midnight, at what time would the temperature be 8^oC below zero? What would be the temperature at mid-night ?

Q.

What will happen if we try to add 5 raise to the power 4 and 6 raise to the power 5

Q. Find the product, using suitable properties:
$8\times 53\times (-125)$

Q.

3(x-1)+6=12

solve for x.

Q. Express each of the following numbers in exponential form:
(i) 512
(ii) 625
(iii) 729

Q.

Solve the following

1. -5(a-3)-2(a+5)=7-9a

2. m/7+1/3= m/6+5/4

3. 2a/3-4/5=-3/4+1

Q.

If $2^{n-7}\times 5^{n-4}=1250$ find the value of $n$.

Q.

In the BODMAS rule, what does ‘O’ stand for?

1. None of These

2. Of

3. Over

4. On

Q. Fill in the blanks.

(i) Reciprocal of $8\frac{2}{5}$ is ...... .
(ii) $13\frac{1}{2}÷8=......$
(iii) $69\frac{3}{4}÷7\frac{3}{4}=......$
(iv) $41\frac{2}{3}\times 18\frac{3}{5}=......$
(v) $\frac{84}{98}$(in irreducible form)= ......

Q. By what number should $6\frac{2}{9}$ be multiplied to get $4\frac{4}{9}$?

Q.

I tried solving this but I did not get the answer. So please guide me how to solve this. X+1/4=-3/8

Q. By what number should (−5)⁻¹ be multiplied so that the product is (8)⁻¹?

Q.

By what number -3 must be multiplied to get -30?

1. -2

2. -10

3. 10

4. -1

Q.

What should be the value of a if the value of 2x² + x − a equals to 5, when x = 0?

Q.

Solve the following.

$\left(-46\right)-20-\left(-34\right)$

Q.

Solve the following.

$(-9)-(-38)$

Q. By what number should 3⁻³ be multiplied to obtain 4?

Q. While multiplying a rational number with an integer, always the denominator remains unchanged.

1. True
2. False

Q. What should be multiplied to an integer 'a', so that the result is 'a' itself ?

1. 1

Q. Find the product, using suitable properties:
$8\times 53\times (-125)$

Q.

The product of $1$ and a whole numbers is a _____________number.

Q.

Use this rule to do these problems:

If 2⁵ is multiplied by 2³, what power of 2 do we get?