Multiplication of Negative Numbers

Q.

What is multiplicative inverse of a number?

Q. If A:B =2:3 & B:C=4:5, then C:A is equal to__________

Q. The product of a positive integer and a negative integer is always ________.

1. zero
2. None of the above
3. negative integer
4. a positive integer

Q.

The rational number 1 is the multiplicative identity for rational numbers.

1. False

2. True

Q.

Product of a negative integer and a positive integer is a positive integer.

1. True

2. False

Q.

Fill in the blanks

The product of a number and it's product is _____________________.

The reciprocal of the reciprocal of a number is _______________________.

Q. Question 8
Is $\frac{8}{9}$ the multiplicative inverse of $-1\frac{1}{8}$? Why or why not?

Q.

Which of the following represents whole numbers?

1. Positive integers

2. Negative integers

3. $\pi$

4. Integers

Q.

0.5 is the multiplicative inverse of 5.

1. True

2. False

Q. Question 4(i)
Find the multiplicative inverse of the following: -13

Q. Find the multiplicative inverse of the following:
$-1\times \frac{-2}{5}$

Q. 18. how to solve 12/root2+root3+root5

Q. Divide and write the quotient and the remainder.
(1) (y² + 10y + 24) ÷ (y + 4)
(2) (p² + 7p − 5) ÷ (p + 3)
(3) (3x + 2x² + 4x³) ÷ (x − 4)
(4) (2m³ + m² + m + 9) ÷ (2m − 1)
(5) (3x − 3x² − 12 + x⁴ + x³) ÷ (2 + x²)
(6) (a⁴ − a³ + a² − a + 1) ÷ (a³ − 2)
(7) (4x⁴ − 5x³ − 7x + 1) ÷ (4x − 1)

Q.

write the multiplicative inverse of $\frac{3}{7}$

Q.

A shopkeeper bought two TV sets at random $15000$ each. He sold one at profit of $25\%$ and the other at a loss of $25\%$.find out overall profit or loss percentage.

Q. Question 9
Is 0.3 the multiplicative inverse of $3\frac{1}{3}$? Why or why not?

Q. In a game, Ted has to earn coins. If he gets a gold coin, he gains 20 points, but if by mistake he gets a red coin, he loses 5 points. What is his total score if he gets 19 gold coins and 7 red coins?

1. 345
2. 340
3. 435
4. 545

Q. Question 4(ii)
Find the multiplicative inverse of the following:
$\frac{-13}{19}$

Q. Determine the integer whose product with (–1) is -21.

1. 21
2. -21
3. -22
4. -1

Q.

Simplify the following.

$10+\left\{26-15\times \left(20-5÷2\times \overline{7-5}\right)\right\}$

Q.

Find the product:

Q. Multiplicative inverse of 29 is

1. -29
2. $\frac{1}{29}$
3. $-\frac{1}{29}$

Q. Multiplicative inverse of -3 upon 7 in bracket raise to -9

Q.

Hasan buys two kinds of cloth materials for school uniforms, shirt material that costs him Rs 50 per metre and trouser material that costs him Rs 90 per metre. For every 2 meters of the trouser material he buys 3 metres of the shirt material. He sells the materials at 12% and 10% profit respectively. His total sale is Rs 36660. How much trouser material did he buy?

Q. Question 44
The multiplicative inverse of $\frac{4}{3}$ is ___

Q. Multiplicative inverse of (-3/7)to the power of -5
a)(-3/7)to the power of 5
b)(3/5)to the power of -5
c)(5/3)to the power of 5
d)(3/7)to the power of -1

Q.

A fruitseller brought 500 bananas at ₹24 a dozen. He sold 200 of them at 4 for ₹6 and the remaining at 2 for ₹4. Find his gain or loss pre cent.

Q.

If $*$ is an operation such that for any two integers $a$ and $b$

$a*b=a-(-b)+(-3)$, find the value of $(-4)*(-5)\mathrm{and}(-5)*(-4)$

Is $a*b=b*a?$

Q.

Find the value of: $373+(-245)+(-373)+145+3000$

Q. If m is a positive integer, then $(-m{)}^3$ is:

1. Negative Integer
2. Positive integer
3. Zero
4. None of these