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:
Advanced Calculator Tasks
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 Approach: Independent |
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 Resources:
Calculator |
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| Questions / instructions: | % responses | ||
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y8
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1. 5607 + 3294 + 6358 + 7286 = |
22,545
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84
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2. 7146 - 5438 = |
1708
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81
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| 3. 6243 X 34 = |
212,262
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86
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4.
16  3975 = |
248.44
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46
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| 5. $35.60 X 23 = |
$818.80
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68
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| 6.
165 197000 =
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1193.9393
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44
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| 7. 73.5 X 0.75 = |
55.125
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79
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8.
2000  0.11 =
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18,181,818
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66
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| 9.
Kate bought a CD for $27.95, a book for $18.50, and some stationery for $6.75.
(a) What is the total cost? (b) If Kate used a coupon for a 15% discount, how much would she have saved? |
$53.20
15% of 9(a) |
83
10 |
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10. Aroha and her mother are working
out the cost of their trip to Disneyland.
How much is the trip going to cost? |
$4775
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47
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11. Mark's school is earning money by collecting aluminium cans and selling them for recycling. There are 61 cans per kilogram. For each kilogram of cans, the school get $1.35. How many cans will they need to collect to earn $1000 for the school? |
45186
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4
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| 12. If x is the
height of a Tyrannosaurus Rex in metres, its weight in kilograms will be approximately
37 x 3. Use this formula to calulate the weight of a 6 metre tall Tyrannosaurus Rex. |
7992kg
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2
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| Commentary: The year 8 students were less confident with division problems. They performed poorly on the percentage task in 9(b), and on the final two items, which were intended to challenge the most capable students. Elsewhere in our assessment, working without calculators, success rates were: question 1: 67% q2:65% q3:37% q4:14% q5:31%. Clearly students performed better using calculators for these items. |
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