Mountains Mystery Picture: To 20, no crossing ten
Solve 79 problems (To 20, no crossing ten, numbers 1–20) and color the matching squares to reveal the Mountains. The worksheet and answer key download together.
- equations
- 79
- Largest number
- 20
- Size
- M
Two grey mountains with snowy peaks, green hills in front and a yellow sun in the sky. The peaks appear first and the slopes grow wider row by row, so the landscape takes shape quickly.
Numbers go up to 20, but no problem bridges ten. Additions like 12 + 5, 14 + 3 or 11 + 6 keep the ones under 10, and subtractions like 17 − 4 or 19 − 6 never need to break into the ten. Answers that land exactly on a ten are allowed, so 7 + 3 = 10 and 13 + 7 = 20 appear, while 8 + 5 or 13 − 5 do not. The idea to take away is that 15 + 3 works just like 5 + 3 with a ten in front.
Within 20 Without Regrouping: Math Mystery PicturesMountains Math Mystery Picture Worksheet