Riddles, one at a time
Shaded Part: Three Corners
What fraction of the square is gold?
Split the square into four quarters. How much of each quarter is gold?
3/8
Each triangle is half a quarter: 3 × 1/8 = 3/8.
The Clock in the Water
Top and bottom swap in the water. What time does the real clock show?
7:50
Water flips top and bottom: flip the hands back up.
Fence Posts
A straight 15 m fence has a post every 3 m, with one at each end. How many posts are there?
Count the gaps first, then the posts.
6
15 ÷ 3 = 5 gaps, and 5 gaps need 6 posts.
Three Level Scales
How many circles balance the last scale?
5 CIRCLES
Square = 2 circles, triangle = 3 circles.
Fewest Tokens: Pay 24
Which tokens pay 24 with the fewest tokens?
Biggest first is not always fewest. A token can be used many times.
6 + 6 + 6 + 6
Just 4 tokens. Biggest first, 15 + 6 + 1 + 1 + 1, needs 5.
What Am I? The Grey Trail
Which object fits all three clues?
Think about the colour of the mark each one leaves.
Pencil
It gets shorter as it works, leaves a grey trail and has lead inside: B.