Fluency game

Adding and subtracting

Number bonds, carrying and borrowing, and decimals, done in your head. Answer as many as you can in 60 seconds, or take 20 questions with no clock.

• 1 Number bonds 39 + ? = 100
• 2 Two-digit 99 + 75
• 3 Crossing hundreds 840 − 346
• 4 Decimals 1.4 + 1.1

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