Froggy Jumps Math Challenge: 12+21Versión en línea Test your addition skills with these questions about the sum of 12 and 21! por Dias Tore 1 What is the sum of 12 plus 21? a 30 b 27 c 33 2 The result of 30 added to 23 is? a 33 b 53 c 34 3 When you sum 10 and 30, what is the answer? a 33 b 37 c 40 4 The total of 12 plus 6 is? a 18 b 33 c 22