Mental Math improves concentration span, number sense, sharpens memory and reduces calculation errors. HAPPY PRACTISING!
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4 subtracted from 63 is
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1 less than 419 is
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What comes after 579?
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> 820 >
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6 tens = 55 +
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6 tens + 9 ones =
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3 subtracted from 42 is
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49, , , 52
89 is bigger than 98. Choose True or False.
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225 = hundreds + tens + ones
