四年级口算题：小数的加法和减法
四年级口算题：小数的加法和减法(1) 54.76 - 51.12 =
(2) 61.45 + 20.7 =
(3) 59.46 + 18.28 =
(4) 46.31 + 21.76 =
(5) 21.85 + 37.08 =
(6) 42.88 - 12.63 =
(7) 84.75 + 13.96 =
(8) 42.39 - 20.92 =
(9) 29.54 - 20.12 =
(10) 76.13 + 13.37 =
(11) 26.31 - 22.07 =
(12) 93.99 - 36.18 =
(13) 69.88 + 27.33 =
(14) 61.04 + 17.67 =
(15) 28.54 - 17.35 =
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