Q 1: 491 + 309 estimate is about ________ . (hint: estimate the sum of three digit numbers by rounding to nearest hundreds place, that is 500+300 = ?). 800 700 200
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Q 2: 559 + 318 estimate is about ________ . (hint: estimate the sum of three digit numbers by rounding to nearest hundreds place, that is 600+300 = ?). 800 900 500
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Q 3: 87 - 41 estimate is about ________ . (hint: estimate the difference of two digit numbers by rounding to nearest tens place, that is 90-40 = ?). 50 60 40
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Q 4: 29 + 45 estimate is about ________ . (hint: estimate the sum of two digit numbers by rounding to nearest tens place, that is 30+50 = ?). 70 80 50
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