Make math colourful! Solve equations with Rainbow Calculators from Learning Resources, a fun, colourful twist on the popular Primary Calculators. Each set of 10 Rainbow Calculators comes with 5 vibrant colours: red, green, blue, orange, and purple—one for every day of the school week! These 4-function calculators check addition, subtraction, multiplication, and division on the 8-digit display, or discover more advanced calculations like square roots and percentages. Operates with both solar and battery power.