KeyNote Studio

Operations

10

(-9/8) + (5/8)

-1/2

15

(-4/9)(-21/10)

14/15

20

(21/4) - (-7/6)

77/12

25

(-12/25) divided by (16/15)

-9/20

30

[(-8/3) + (-5/3)] divided by [(2/3)(-5/15)]

39/2

Conversion

10

Convert 0.111111... to fraction

1/9

15

Convert 0.454545... to fraction

45/99 or 5/11

20

Convert 0.321212121... to fraction

323/990

25

Convert 0.221212121... to fraction

73/330

30

Convert 2.3177777... to fraction

2 143/450 or 1043/450

Square Root

10

Find the square root of 121

11

15

Find the square root of 196

14

20

Estimate the square root of 31

approx. 5.55

25

Estimate the square root of 90

approx. 9.47

30

Estimate square root of 180

approx. 13.41