Once you know:
i) the addition tables (What’s 5 + 8?)
ii) the subtraction tables (What’s 8 – 5?)
iii) the multiplication tables (What’s 7 times 8?)
iv) long division (What’s 6231 divided by 93?)
…you are ready to start Life of Fred Fractions, the first book in the Pre-Algebra series. This book goes far beyond basic fractions so you probably do need it even if you have already learned a bit about basic fractions.
After completing Life of Fred Fractions, go on to the Decimals and Percents Book. Again, this book teaches much more than decimals and percents! Follow along the recommended order for completion and before you know it, you will be inviting Fred as a guest to your dinner table conversations.