One of my boys is homeschooled, and even before he did well with some warm-up / practice worksheets at home. I made randomized worksheets in Google Sheets that would let us print out the same types of problems, but with different values. Because he could memorize them (at least the earlier, simpler ones). These are targeted for a 7th grade program but likely apply to 6th and 8th grades.

• Adding and Subtracting Integers
• Integer Multiplication / Division, including PEMDAS / orders of operation
• Long division (Integer)
• Fractions I (integer + simple fraction)
• Fractions II (addition, subtraction, multiplication, division)
• Decimals (rounding, addition, subtraction, multiplication, division)
• Scientific Notation & Metric conversion
• Variable substitution (pre-algebra)
• Solving equalities & inequalities