4 and 5-Digit Addition. This page has resources for teaching addition with 4 and 5-digit numbers. Includes column addition exercises, an addition crossword, and word problems. (Approx. level: 3rd grade, 4th grade, 5th grade).
Decimal Addition & Subtraction. Find sums and differences for pairs of decimals on these worksheets. These practice pages have decimals in tenths, hundredths, and thousandths.
Writing Algebraic Expressions. Write simple expressions in algebraic form with a variable. 5th through 7th Grades.
This site has hundreds of basic multiplication activities. Printables include multiplication games, quizzes, word problem worksheets, cut-and-glue activities, flashcards, math mystery pictures, and much, much more.