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

Q 2: 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

Q 3: 29 + 45 estimate is about ________ . (hint: estimate the sum of two digit numbers by rounding to nearest tens place, that is 30+50 = ?). 50 80 70

Q 4: 419  187 estimate is about ________ . (hint: estimate the difference of three digit numbers by rounding to nearest hundreds place, that is 400200 = ?). 400 300 200

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