Sum up

28th January 2000 at 00:00
SUM UP: Choose from these 4 cards.

Each time use each card only once. Make these totals : 9, 10, 11, 12, 13, 14, 15.

What other totals can you make from these cards?

MILLENNIUM: At what time of what day of what year will it be:

a 2000 seconds

b 2000 minutes

c 2000 hours

d 2000 days

e 2000 weeks

PUZZLES TO TEST MATHEMATICAL SKILLS - ANSWERS (PAGE 55)

Millennium age 9-11

(Questions A to C are suitable for 10 to 11-year-ods working with a calculator. Questions D and E should extend the most able 11-year-olds).

a) 00:33:20 1 January 2000

b) 09:20 2 January 2000

c) 08:00 24 March 2000

d) 00:00 23 June 2005

e) 00:00 1 May 2038

Sum up age 5-7

9 = 2 + 3 + 4

10 = 2 + 8

11 = 3 + 8

12 = 4 + 8

13 = 2 + 3 + 8

14 = 2 + 4 + 8

15 = 3 + 4 + 8

Other totals

5 = 2 + 3

6 = 2 + 4

7 = 3 + 4

17 = 2 + 3 + 4 + 8


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