13.

what is 2.28 × 10–8 in standard form?
(1 point)228,000,000
22,800,000
0.228
0.228

14.

which of the following is an example of an irrational number?
(1 point)square root of twenty five
–31
1.414213562..
1 over 15

15.

which number is equivalent to 0.3?
(1 point)one-third
thirty-three over one hundred
five-sixths
two-thirds

16.

riding the bus, roger uses one-third of his money for bus fare. what is the fraction of his money expressed as a decimal?
(1 point)point three repeating
point six repeating
point eight repeating
one point five repeating

17.

serena has seven-eighths yd of fabric. to complete her craft project, she needs 3 times that amount. how many yards of fabric does serena need?
(1 point)2two and five-eighths
two and seven-eighths
3three and three-sevenths
three and seven-eighths

18.

negative one over six + (–three over seven) =
(1 point)negative twenty-five over forty-two
negative four over thirteen
eleven over forty-two
two over thirteen

19.

8 over 9 + (negative three fourths) =
(1 point)eleven over thirteen
five over thirty-six
negative twenty-four over thirty-six
1

20.

5one-third – three and four-sevenths=
(1 point)two and three fourths
–two and three fourths
one and sixteen over twenty-one
negative one and sixteen over twenty-one

21.

one over four × negative one half
(1 point)–one-eighth
one-eighth
–one-fourth
negative one-half

22.

five-eighths ÷ fifteen over sixteen =
(1 point)five over twelve
three-fourths
three-halves
two-thirds

23.

a piece of string is 3 yards long. how many 1one-fourth–yard-long pieces can julie cut from the string?
(1 point)1
2
3
4

24.

5 and 1 over 3 ÷ one and one fifth =
(1 point)4 and 4 over 9
–4 and 4 over 9
51 over 15
41 over 15