Pictograms and block graphs · Usually met around P2
Tally charts and tables
A full tally of 5 strokes stands for 5.
How to do it
Method
A full tally of 5 strokes stands for 5
3 full, 2 strokes: 3 × 5 = 15, 15 + 2 = 17
Another way
Count in fives
5, 10, 15 → 15 + 2 = 17
In full
A table shows the data collected, so you can see at a glance how many each item has. Here the tallies are drawn as 正 shapes. Each stroke is 1, and a full 正 has 5 strokes, so it stands for 5. Count the full ones first, then the strokes left over: 3 full and 2 strokes, 3 × 5 = 15, 15 + 2 = 17. To compare two items, take one from the other. For both together, add them. Find the most and the fewest, and take one from the other to get the difference. The table's Total is all the items added together. So the Total minus the items you know gives the one left blank: Total 60, with 12, 18 and 20 known, 12 + 18 = 30, 30 + 20 = 50, 60 − 50 = 10. Or count in fives: 5, 10, 15, then 16, 17.
Worked examples
Have a go first, then open each one for the answer and the working.
Example 1
Most − fewest = ? pupils
Show the answer and working
Answer: Most − fewest = 23 pupils
Most: Fishballs, 31; fewest: Bolo bun, 8; 31 − 8 = 23
Example 2
Choc milk: ? pupils
Show the answer and working
Answer: Choc milk: 12 pupils
A full tally is 5: Choc milk: 2 full, 2 more, 2 × 5 = 10, 10 + 2 = 12
Example 3
Milk tea + Soy milk = ?
Show the answer and working
Answer: Milk tea + Soy milk = 17
A full tally is 5: Milk tea: 4 strokes, 4; Soy milk: 2 full, 3 more, 2 × 5 = 10, 10 + 3 = 13; 4 + 13 = 17
Practise it in the game →Pictograms and block graphs · Free to start, unlimited questions, no download