JUMP Math 4.2 /Workbook Grade 4, part 2 of 2 covers

- Probability and Data Management:  Graphs
- Number Sense:  Fractions
- Number Sense:  Decimals
- Patterns and Algebra:  Equations
- Measurement:  2-D Shapes
- Measurement:  Time
- Geometry:  3-D Shapes
- Probability and Data Management:  Probability

It has 152 pages.
Together with JUMP Math 4.1 /Workbook Grade 4, part 1 of 2,
they cover the Ontario Math Curriculum for Grade 4 level.