Create better lessons quicker
1) 1 000 - ? = 440 2) 360 + 186 = ? 3) ? - 384 = 361 4) 900 - ? = 550 5) 680 - ? = 320 6) ? + 280 = 700 7) 360 + ? = 600 8) 620 + 180 =? 9) 3 000 -? = 2 000 10) ? - 2 000 = 2 000

Realize os cálculos no caderno para encontrar o número que falta.

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Open the box is an open-ended template. It does not generate scores for a leaderboard.

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