23

Fix, scientific notation and norm

Remember!
Whenyouwanttocancelfixorscient ificnotationchooseNorm2.Refertopa ge5forfix
andscientificnotationprocedures.
1. Express65123inscientificno tationwith2significantfigures.
2. Express 3
6.8 10 ´withoutusingscientificnotation.(Hin t!Press6.8OK3
thensetthecalculatortoNorm2.)
3. Express 6
3.25 10 ´withoutusingscientificnotation .
4. Write4.6349correctto2decim alplaces.
5. Determinethevalueof16.8731co rrectto1decimalplace.
6. Findthevalueof 175co rrectto2decimalplaces.
7. Calculatethevalueof 2 3
8.61 10 9.356 10 ´ ´ ´inscientificnotationwithtwo
significantfigures.
8. Whatisthevalueof 8.3 2.5 ´?Expressyouranswerasadecima l.
9. Findthevalueof

( )

2
11.75 correcttotwodecimalplaces.
10. Whatisthevalueof 5 4
4.1 10 (8.75 10 ) ´ ¸ ´correcttothenearestwholenumbe r?
11. Thecalculation
( )
3
1.07 $1260 ´givesthevalueofaninvestmentin 3yearstime.
Calculatethevalueoftheinvestmen tin3yearstimecorrecttothenearestcen t.
12. Calculatethevalueof 2 rh
p
whenr=17.6andh=11.8.Expressyou ranswer
correctto1decimalplace.
13. Thescreencaptureshowsaca lculation.
A Howdoyouknowthecalculatoris setinscientificnotation, notNorm1 or2?
B Howmanysignificantfiguresisthec alculatorsettodisplay?
C Expresstheanswerwithoutan yroundingorscientificnotation.
Answers
14
6.5 10 ´26800 33250000 44.63 516.9 6 1 3.23 76
8.1 10 ´
8 20.75 9138.06 10 5 11 $1543.55 121304 .9
13ASCIisatthetopofthescreen B 2 C3 1102015
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