Each square has a fact. Solve it, find the answer under a crayon and color the square, and a hidden picture shows up. These pictures are set out in the order facts are taught, so a child adding within 10 only meets sums to 10. Three are free here: adding within 10, subtracting across 10, and a mixed addition and subtraction picture. The pack has 24 pictures, from adding within 10 to subtracting across 10.
Addition facts with sums to 10, adding 0 too. The hidden picture shows up as the squares are colored. Color answer key included.
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Facts like 15 − 8 that cross back over 10. The hidden picture shows up as the squares are colored. Color answer key included.
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Addition and subtraction facts within 20. The hidden picture shows up as the squares are colored. Color answer key included.
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The 3 free pictures above, plus 21 more that are only in the pack, each with its color answer key.
Tap any picture to see it larger.
A mystery picture is fact practice that children want to finish. The page starts as a grid of 120 plain squares with a fact in each one. The crayon boxes at the top list which answers go with which color, so every fact has to be solved before its square can be colored. The picture is not printed anywhere on the sheet: it only appears as the squares fill in.
Most color by number sheets mix every fact to 20, which is no use to a child who is still adding within 10. Here each picture uses one step: adding within 10, doubles and near doubles, bridging 10 (8 + 5, where the answer goes past 10), and sums to 20; then subtracting within 10, from teen numbers (17 − 5) and across 10 (15 − 8).
The sheets check themselves. A wrong answer puts the wrong color in the picture, and it shows. A whole picture is a lot for a young child, so a row or two a day is plenty, and fingers, counters or a number line are fine.
For pictures that mix every fact to 20, see the mystery pictures page. For plain fact practice, see the addition and subtraction worksheets. For two-player practice, see the addition and subtraction games. Older children can go on to multiplication color by number.
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