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2025 Daily Puzzles - Wednesday - KS2 (Lower)

Image of a pyramid made of rectangles with 4 blocks in the bottom row, 3 in the next, 2 in the next and 1 on top. Each block overlaps two blocks on the row below. The bottom blocks contain the numbers 19, 23, 31, 15. The left-most block on the next row contains the number 42. The other blocks are empty. The puzzle is: In this Pyramid, you add the numbers in two blocks next to each other and put the answer in the block above them. e.g. 42 is created by 19 + 23. What number should be in the top block?