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About this game
Convert hours to minutes: a free Grade 5 math game for ages 10-11. Kids change hours and minutes into minutes. Each round brings 10 fresh questions with new numbers; instructions are read aloud and every answer is checked.
The movie lasts 2 hours and 40 minutes; how many minutes is that? Convert hours to minutes asks that kind of question ten times a round, with 2 to 5 hours and extra minutes in steps of five, drawn fresh for every card, so a time can come back now and then. Your child types the total in minutes in this Grade 5 game. Each answer is checked, and a hint sits on every card.
Hours and minutes do not count in tens. One hour is 60 minutes, so the hint's two steps are the whole method: change the hours to minutes, then add the extra minutes. 2 hours and 40 minutes becomes 120 + 40, which is 160. It is a multiplication by 60 followed by an addition, a small two-step problem every time.
Base-ten habits creep in. Read 2 hours and 40 minutes as a 2 and a 40 side by side and the answer comes out 240. Ask, "How many minutes are in one hour, really?" Then rebuild it as 60 + 60 + 40. Name the effort: "You turned each hour into 60 minutes."