About this game
Review the goal “Adding and subtracting whole numbers” in Grades 4–5 math (ages 9–11). Its questions ask you to add or subtract large whole numbers.
4th grade (ages 9–10) - 5th grade (ages 10–11) - Grades 4–6 (ages 9–12)

Grades 4–5 math review game (ages 9–11): adding and subtracting whole numbers. Instructions are read aloud, and every answer is checked and explained.
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Review the goal “Adding and subtracting whole numbers” in Grades 4–5 math (ages 9–11). Its questions ask you to add or subtract large whole numbers.
This review game covers a math goal for grades 4 and 5: “Adding and subtracting whole numbers”. Its questions ask you to add or subtract large whole numbers.
Each round has 10 questions drawn at random: you choose the right answer, or you type it. The numbers change every round. The instructions are read aloud, and a bar shows how far along you are. After each answer, an explanation helps you understand. Hints are free, and you can go back.
The game is for children aged 9 to 11. Play it again for different questions.
Line up the ones under the ones, then work from right to left without forgetting to carry or regroup.
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