Work through the levels in order. Type your answer and press Check — open the worked solution if you get stuck. Answers like -6, 3/4 or 0.25 are typed exactly as shown.
Level 1 · Warm-up
1 The frequencies in a table are 3, 6, 4, 1 and 1. How many answers were collected?
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3 + 6 + 4 + 1 + 1 = 15.
2 A tally row shows four upright strokes with a fifth drawn across them. What number is that?
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5 — one complete bundle.
3 In the siblings table, 3 students have 0 siblings. How many siblings is that between them?
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0 × 3 = 0 siblings.
Level 2 · Core
4 Siblings: 0 has 3, 1 has 6, 2 has 4, 3 has 1, 4 has 1. How many students have exactly 2 siblings?
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4 students.
5 Same table. How many students have 2 or more siblings?
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4 + 1 + 1 = 6 students.
6 Favourite fruit: apple 7, banana 6, orange 4, grapes 3. How many students were surveyed?
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7 + 6 + 4 + 3 = 20 students.
Level 3 · Challenge
7 Siblings: 0 has 3, 1 has 6, 2 has 4, 3 has 1, 4 has 1. How many siblings do these students have altogether?
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0 + 6 + 8 + 3 + 4 = 21 siblings.
8 A table of 15 answers has frequencies 3, 6, 4, 1 and 1, but the TOTAL row says 16. What has gone wrong?
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3 + 6 + 4 + 1 + 1 = 15, so the total should be 15. The total row was written down incorrectly.
9 Favourite fruit: apple 7, banana 6, orange 4, grapes 3. How many students chose something other than apple?
Show worked solution
6 + 4 + 3 = 13, which is also 20 − 7.