Mountains Mystery Picture: All four operations to 20
Solve 79 problems (All four operations to 20, 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.
Addition and subtraction to 20, crossing ten included (7 + 8, 16 − 9), are mixed with multiplication and division facts from the times tables whose numbers stay within 20: 3 × 6, 4 × 5, 18 ÷ 3, 20 ÷ 4. Switching between operations is a skill of its own. Plenty of children can manage a full page of subtraction or a full page of multiplication but slip when 12 − 4 is followed straight away by 12 ÷ 4.
Mixed Operations Within 20: Math Mystery PicturesMountains Math Mystery Picture Worksheet