Mental Math improves concentration span, number sense, sharpens memory and reduces calculation errors. Happy Practising!
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Fill in the blank.
The sum of 102 and 38 is
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30 + 30 + 30 = 3 times + 60
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22 more than 55 is
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729 = + 708
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The product of 30 and 10 is
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100 + 91 = 120 +
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11 tens – 99 ones =
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Seven more than 909 is
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The sum of 33 and 24 is
Complete the pattern.
74 66, 62, 58
