heres a list of question for all u math genius?

Question

express the following correct to 2 decimal places.

a) 12.345
b) 0.0782



Round off the following numbers to the nearest ten.

a) 72.0645
b) 289.67


Express the following correct to 3 significant figures.

a)239 732
b)0.001253

Divide 43670 by 100 corrected to 2 significant figures.


Evaluate 31.9 * 107/13.7 correct to 2 decimal places.



express 11/12 as recurring decimal.

Answer 1

#1-
a)12.35
b)0.78

#2-
a)70
b)290

#3-
a)240 x 10^3
b)1.25 x 10^-3

SUPPLEMENTAL:

#1- 44

#2- 249.15

#3- .9166666666666666666666

(#3 should actually be .916 with a line drawn ONLY over the '6' but the formatting won't let me illustrate it.)

Answer 2

a)12.35
(some teachers say you round up on 5, others argue you round up or down to the even number)
b)0.08

a)70
b)290

a)2.40x10^5
b)1.25x10^-3

Answer 3

a) 12.35

b) 0.08


to the nearest 10 or tenth ??
a) 72.1 (nearest tenth) or 70 (to the nearest 10)
b) 289.7 (nearest tenth) or 290 (nearest ten)

to 3 SF
a) 240,000
b) 0.001

Answer 4

1a)12.34 (a rule is that if u have an even no. before 5 then u leave the no. as it is)
b) 0.08

2a) 70
b) 290

3a) 240 000
b) 0.00125

Answer 5

a) 12.35
b) 0.08

a) 70
b) 290

a) 240
b) 125 * 10^-5

Answer 6

a) 12.000
b) 9.0

a)72.064
b)289.70

a)2.39 X10^5
b)1.25X10^-3

Answer 7

huh?