Decimal Operations

Decimal Addition

100

2.34 + 1.25 =

3.59

200

1.8 + 1.2 =

3.0

300

1.4 + 12.7 =

14.1

400

1.25 + .9 =

2.15

500

198.4 + 32.59 =

230.99

Decimal Multiplication

100

1.3 x 7 =

9.1

200

.44 x 8 =

3.52

300

4.59 x 3.68 =

16.8912

400

.11 x .19 =

0.0209

500

9.87 x 3.9 =

38.493

Decimal Division

100

2.4 / 6 =

0.4

200

1.84 / 4 =

0.46

300

.67 / .6 =

11 R1

400

87.19 / .3 =

270.6 R1

500

91.9 / .72 =

127 R46

Decimal Subtraction

100

34.5 - 19.4 =

15.1

200

7.65 - 3.2 =

4.45

300

9.1 - 4.67 =

4.43

400

16 - 7.34 =

8.66

500

986.4 - 3.975 =

982.425

Decimal Equations

100

x-1.75=-19

x= -17.25

200

-3.5=-5x

x=0.7

300

3.4 + 2n =8

n= 2.3

400

10.1 = S/(10) + 20

s = 99

500

0.64f=12.8

f=20

neg/pos exponents

100

5^{-3 .}  2^-1 = 

    1/625

200

8 ^-2

8^-1

 8/64 = 1/8

300

v^-3(2ab)²

(ac)^-5

 

 4a²b²a⁵c⁵

     v³

400

Write -48,603 in scientific notation.

What is  -4.8603 x 10⁴ ?

500

Write 0.000257 in scientific notation?

What is 2.57 x 10^-4 ?