Q 1: 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

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 = ?). 200 800 700

Q 3: 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 4: 419  187 estimate is about ________ . (hint: estimate the difference of three digit numbers by rounding to nearest hundreds place, that is 400200 = ?). 300 200 400

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