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Mentally Add & Subtract 10 or 100
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For Second Grade
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Develop sharp mental arithmetic skills.
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Instantly add or subtract 10 or 100 from numbers 100-900.
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Boost numerical confidence and intuition.
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Celebrate the power of mental math!
Begin the Mental Math Challenge!
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Ability to
track performance history
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Adaptive learning activities
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Ridge Racer
gamified calibration
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