Our most budget-friendly 4-function calculator features a percent key square root key and an 8-digit display. Solar-powered with battery backup. Includes two calculators in each vibrant fun color: red blue lime green orange and purple packed inside a sturdy storage box. Measures 2 1/2"W x 4 1/2"H x "D. Screen measures 1 5/8"W x 5/16"H. Set of 10 Recommended Grade(s): K-5 Our most budget-friendly 4-function calculator features a percent key square root key and an 8-digit display. Solar-powered with battery backup. Includes two calculators in each vibrant fun color: red, blue, lime, green, orange and purple packed inside a sturdy storage box. Measures 21/2"W x 41/2"H x "D. Screen measures 1 5/8"W x 5/16"H. Set of 10.