Register free to access all resources! Or check out our sample resources.

2024 Daily Puzzles - Key Stage 4 Solutions

Monday: 28%. The areas of the three circles in cm2 are 9π, 16π and 25π. The shaded area is 16π – 9π = 7π, which is 7 ÷ 25 = 28% of the area of the large circle. Tuesday: 9 ops. Work backwards: want to aim for 50 times 2 = 100 in as few steps as possible. So second to last step must be 25 times 2 = 50. To get to 25, 0 + 1 = 1; 1 times 2 = 2; 2 + 1 = 3; 3 times 2 = 6; 6 x 2 = 12; 12 times 2 = 24; 24 + 1 = 25; 25 times 2 = 50; 50 times 2 = 100" Wednesday: 11 points Thursday: 10 kg. Friday: 1 = 1 1 + 3 = 4 1 + 3 + 5 = 9 1 + 3 + 5 + 7 = 16 The sums are giving square numbers. So sum of the first n numbers will be n squared. As n squared = 2 704, n = square root of 2 704 = 52