2024 Daily Puzzles - Key Stage 2 Solutions

Monday: 169. The lowest common multiple is 168, then just add 1 to get 169 Tuesday: 70%. Total of 3 tests = 65% x 3 = 195%. 195% + 85% = 280% so average of 4 is 280% divided by 4 = 70% Wednesday: 6/27 or 2/9. Let red counters be y, blue counters be 2y and black 6y, y + 2y + 6y = 27, so y = 3. So there are 3 x 2 = blue counters. Probability of picking a blue one is therefore 6 in 27 or 2 in 9 (or in fractions form) Thursday: a ⊗ b = a x b – 5 so 9 ⊗ 5 = 45 – 5 = 40 Friday: 32 since if you place the numbers in vertical format, B would have to be 2 and if you borrow from A and carry to B then 12 – 9 means A = 3