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About this game
Divide by 10: a free Grade 5 math game for ages 10-11. Kids divide whole numbers by 10 and write the decimal answer. Each round brings 10 fresh questions with new numbers; instructions are read aloud and every answer is checked.
Divide by 10 looks like the easiest card in Grade 5, until the answer needs a decimal point. Each card shows a number from 11 to 999 that does not end in zero, such as 146 ÷ 10, so every answer has a tenths digit: 14.6. New numbers come on every card, ten per round, and your child types each answer, which is checked straight away; a hint is ready on each card.
Dividing by 10 moves every digit one place to the right, and the hint says so in those words: the ones digit moves to the tenths place. So 146 becomes 14.6, and 41 becomes 4.1. Nothing is lost. The digits stay in order and simply slide, which is the base-ten system working in reverse.
One place, not two. Asked for 146 ÷ 10, a child who slides too far types 1.46, which is dividing by 100. Ask, "Is 1.46 a tenth of 146, or a hundredth?" Multiplying back by 10 checks it. Close with, "You moved each digit exactly one place."