Number Operations and Properties

• 12 - [- 15 + (- 2) - 3] =
  • 12 - [- 15 - 2 - 3]
  • 12 - [- 20]
  • 12 + 20 = 8

[-6 + (-9)] ____ [-6 - (-9)] [-6 - 9] _____ [- 6 + 9] -15 < + 3

Yes, it is correct. Place value of 2 = 2000 Face value of 5 = 5 Hence, the sum = 2005.

3z - 21 = 4z - 24 Or, z = 3 Or, 3 x 3 + ( 3 - 2 ) = 9 + 1 = 10

Let the two numbers be x and y. xy = 72 And x/y = 18 On dividing the two equations, we get y^2 = 4 Or y = 2 Substituting the value of y = 2 in either of the equations, we get x = 36

x + y = 25 and x - y = 13 (where x is bigger)

On adding the two equations, we get 2x = 28 or x = 14 And y = 11

The greatest common divisor of 18 and 60 is 6, as 6 is the largest integer that divides both 18 (6*3) and 60 (6*10).

The greatest common divisor of 20 and 28 is 4, as 4 is the largest integer that divides both 20 (4*5) and 28 (4*7).

CMN = C (MN) = 3 (5) = 15

(Caluclating variable terms and constant terms separately well get 8b-32)

Which has two terms

Divide 13421408 by 364