Q 1: 87  41 estimate is about ________ . (hint: estimate the difference of two digit numbers by rounding to nearest tens place, that is 9040 = ?). 60 50 40

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 = ?). 900 800 500

Q 3: 928  237 estimate is about ________ . (hint: estimate the difference of three digit numbers by rounding to nearest hundreds place, that is 900200 = ?). 700 800 600

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 50 80

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