Subtract 1- or 2-digit number from a 2-digit number with/without renaming
Or you can usually find textbooks and workbooks at the public library, where you can also copy any worksheets that you want to use.
How much of an apple pie has been eaten? The answer to this question can be expressed in percentages, 50%; or in decimals, 0.5; or in fraction, ½. In other words, half of mom's delicious apple pie is gone.
However, caution must be taken into account when review is repeatedly covered in your classroom. You do not want your students to become bored or frustrated with the repetition.