Idiot\'s Guides Basic Math and Pre-Algebra

Check Point Answers 299

17.^8

9

1 4

32 36

9 36

23 36

18.^2
15

31 8

16 120

315 120

331 120

72
3
93
4
78
12
99
12
1617
12
175
12

51
10

11 2

51 10

15 10

411 10

15 10

36 10

33 5

Chapter 6

9.003 is nine and three thousandths.

82.4109 is eighty-two and four thousand one
hundred nine ten-thousandths.

“forty-two hundredths” is 0.42.

“forty-two ten-thousandths” is 0.0042.

“three hundred twelve and nine hundred
one thousandths” is 312.901.

0.00001 = 10-5

0.000000001 = 10-9

0.000000000000001 = 10-15

10-6 = 0.000001

10-10 = 0.0000000001

0.492 = 4.92 v 10 -1

0.0000051 = 5.1 v 10 -6

2.7 v 10 -5 = 0.000027

8 .19 v 10 -7 = 0.000000819

5.302 v 10 -4 = 0.0005302

45.9 + 19.75 = 65.65

397.256 – 242.81 = 154.446

17,401.12 + 15,293.101 = 32,694.221

Chapter 5

1.^18

5 33 5

2.^37

4 91 4

3. 71

3

22 3

4. 123

4

51 4

5. 117

8

95 8

6.^1

5

8 40

7.^3

4

21 28

8.^5

7

105 147

9.^35

40

7 8

10.^63

84

3 4

11.^2

3

21 50

7 25

7

25

12.^8

15

2 25

8 15

25 2

20 3 6 2 3

4

3

5

13.

2 7

2 5

6 49

14 15

4 35

14. 43

8 1 7 8

35 8

15 8

35 8

8 15

7 3 2 1 3

7

3

15. 54

7 4 2 3

39 7

14 3

26 1 26

13 2

16.^4

7

3 5

20 35

21 35

41 35 16 35