1. Standard Form & Ordinary Numbers – Converting – Treasure Trail
Individual students (or pairs) can start the trail at any question poster.
Once they have calculated the answer they should then find the poster that has that answer at the top. Students go from one question to the next until they have completed the full circular trail.
Students should record the letters of the
questions they have completed.
(Clear plastic wallets around your classroom
make it quick and easy to display posters.)

2. Printing To print full page posters - Click:
File > Print. Enter ‘4-20’ in ‘Slides:’ or
Click on the section title to highlight all posters.
To print half-size posters -
File > Print. Select ‘Full Page Slides’, then ‘2 Slides’.

3. Standard Form

4. 40200 g
Convert this to
an ordinary number.
4.1 × 104

5. 41000 b
Express this number
in standard form.
420000

6. 4.2 × 105 P
Convert this to
an ordinary number.
4.1 × 10−2

7. 0.041 J
Express this number
in standard form.
0.0041

8. 4.1 × 10−3 d
Convert this to
an ordinary number.
4.1 × 105

9. 410000 m
Express this number
in standard form.
40100

10. 4.01 × 104 h
Convert this to
an ordinary number.
4.1 × 10−5

11. a
Express this number
in standard form.
0.411

12. 4.11 × 10−1 l
Express this number
in standard form.

13. 4.01 × 10−3 f
Convert this to
an ordinary number.
4.02 × 10−5

14. Z
Express this number
in standard form.
4010

15. 4.01 × 103 k
Convert this to
an ordinary number.
4.1 × 103

16. 4100 i
Convert this to
an ordinary number.
4.02 × 10−1

17. 0.402 o
Express this number
in standard form.
4002

18. 4.002 × 103 e
Express this number
in standard form.
0.004

19. 4 × 10−3 n
Convert this to
an ordinary number.
4.02 × 104

20. Teacher’s Answer SheetG
41000 D
410000 L
4.01 × 10−3 I
0.402 B
4.2 × 105 M
4.01 × 104 F O
4.002 × 103 P
0.041 H Z
4.01 × 103 E
4 × 10−3 J
4.1 × 10−3 A
4.11 × 10−1 K
4100 N
40200

21. answers g b P J d m h n a e l o i k Z f

22. Answer Sheet
Sheet
Answer

24. tom@goteachmaths.co.uk Questions? Comments? Suggestions?
…or have you found a mistake!?
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