Word sums involving 5-digit numbers


A citrus farmer sells fruit. During July he sold 35 406 oranges, 41 825 naartjies and 22 769 lemons. How much fruit did he sell during July?


First we estimate:


35 406 + 41 825 + 22 769 ≈ 35 000 + 42 000 + 23 000 ≈ 100 000 Then add in columns 35 406 = 30 000 + 5 000 + 400 + 0 + 6 (+) 41 825 = 40 000 + 1 000 + 800 + 20 + 5 (+) 22 769 = 20 000 + 2 000 + 700 + 60 + 9 Answer = 90 000 + 8 000 + 1 900 + 80 + 20 = 90 000 + 9 000 + 900 + 100 = 100 000


Check: 100 000 − 35 406 − 41 825 = 30 000 − 5 406 − 1 825 (subtract 30 000 + 40 000 = 70 000) = 24 000 − 406 − 825 = 22 800 − 6 − 25 = 22 769; True


(subtract 5 000 + 1 000 = 6 000) (subtract 400 + 800 = 1 200) (subtract 6 + 25 = 31)


98 Term 2


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