To strengthen math skills, I give math homework twice a week, in addition to the math lessons. My kids love math homework. One of their favorites is from a program called "Drop in the Bucket", a blackline master book from Frog Publications. Students actually cheer when they hear that we are doing a "Drop in the Bucket" as homework. I start with Level D (4th Grade) and work through Level E, which is fifth grade. These are a great way to make sure students are proficient on a particular skill.

When we are studying for a test, I give skill review worksheets I call scrambled eggs. I have included two as freebies.
Addition/Subtraction Scrambled Egg 1
Multiplication/Division Scrambled Egg 2