The equation slips, designed to be used with the operations materials, provide hands-on practice with operation equations. This helps children develop a concrete understanding of math concepts rather than relying on rote memorization. This set includes: - 90 addition equation slips. The sum is never greater than 18. These slips are to be used with the Addition Strip Board. - 90 subtraction equation slips. The difference is never greater than 9. These slips are to be used with the Subtraction Strip Board. - 90 multiplication equation slips. The product is never greater than 81. These slips are to be used with the Montessori Multiplication Charts.- 70 division equation slips. The quotient is never greater than 9. They are to be used with the Montessori Unit Division Board. There are 3 variations included:Set 1 - question slipsSet 2 - question slips and answer slips (match together)Set 3 - question slips with the answers on the back (fold slip in half) These slips are approximately 2cm x 4.5cm. The files are in PDF format. The download is a ZIP file you must unzip before accessing the individual PDFs.