1. Use a calculator to do the following calculations (turn your calculator upside down and you will see a "word"):
a. 97 − 63
b. 46708 − 45789
c. 140 ÷ 4 × 100 − 455
d. 64.9656 ÷ 84
e. 241670 ÷ 65
f. 59^{2} + 4237/19g.
2. Use a calculator to do the following calculations involving brackets and exponents:
a. 42 x (56 + 47)
b. (23 + 56) x 91
c. 4.3 + (3.5 − 2.3) x 2.4
d. 23^{2} + 31^{2}
e. 23 − 3.4^{2}
f. 2.6^{3}
g. 5.4^{3} − 3.6^{3}
3. Use a calculator to calculate the following and round your answers to the nearest whole number.
a. 44.55 + 98.1 x 24.6
b. 5.6^{2}
c. 24.65 ÷ 0.352
d. 4.5^{3}
e. 2.63 + (9.67 − 3.97)
f. (5.6 + 9.7) − 5.84
g. 5.45^{2} − 3.59^{2}
4. The following table shows the distances from Christchurch to eight New Zealand South Island towns and cities.
Name of city or town

Distance from Christchurch (km)


Invercargill

579


Dunedin

362


Westport

333


Nelson

424


Greymouth

258


Oamaru

247


Queenstown

486


Timaru

163

a. Enter the data into the first two columns of a spreadsheet.
b. Make the names of the cities bold.
c. Centre the distances.
d. Use a formula to add all of the distances together.
e. Sort the distances into order from smallest to largest.
5. The following data shows the amount earned in dollars($) in a week by four workers at a supermarket.
Ralph

Susan

Sam

Jan


Monday 
79

89

82

65


Tuesday 
58

85

95

54


Wednesday 
90

84

92

56


Thursday 
83

78

86

54


Friday 
82

89

102

49

a. Put this information into the first 5 columns and first 6 rows of a spreadsheet.
b. Use formulae to find the total amount earned by each employee.
c. Use formulae to find the total amount earned each day.
d. Find the total amount earned by all of the workers.
e. If the workers are paid an avarage of $9.50 for each hour worked, use a spreadsheet cell to calculate the total hours worked.