With Rounding to the Nearest 1000 Color by Number, the more problems students get right, the more of the picture appears. Students solve each problem, match the answer to the color key, and a hidden picture appears region by region. Students round numbers to the nearest 1000 and sharpen estimation. Built for Grade 4 and aligned to 4.NBT.A.3. Print it for morning work and centers or assign the self-checking interactive version for home — each download includes the PDF and the digital answer-key version.