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三年级下小数点口算420道

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3 .9 +1 2 .6 = 1 .9 +5 .2 = 5 .8 +3 .3 = 4 .2 +3 .9 = 1 .5 +3 .6 = 5 .3 +6 .8 = 4 .3 +2 .6 = 5 .8 +1 .6 = 6 .2 -3 .6 = 5 .2 -3 .2 = 4 .2 +1 .5 = 6 .2 -3 .1 = 4 .2 -3 .1 = 5 .9 -3 .6 = 4 .8 -5 .7 4 = 9 .3 +6 .8 = 6 .6 -3 .1 = 3 +6 .5 = 5 .2 -5 = 4 .6 -3 .2 = 1 .6 -0 .7 = 5 .2 -0 .8 = 4 .6 -0 .8 = 4 .6 +3 .8 = 0 .9 +6 .3 = 1 .2 +3 .6 = 1 0 +3 .5 = 1 .0 2 -1 .0 2 = 3 .5 +3 .6 = 2 .9 -0 .8 5 = 1 .6 +5 .3 = 6 .2 -3 .8 = 1 .2 5 -0 .7 5 = 3 .6 +1 .3 = 4 .3 -3 .5 = 0 .6 -0 .2 = 1 .2 -0 .3 = 0 .2 5 -0 .1 5 = 1 .7 +3 = 6 +0 .3 = 0 .6 +3 .2 = 0 .8 -0 .3 = 0 .5 +0 .9 = 0 .6 -0 .4 5 = 1 .2 -0 .5 = 0 .8 +6 .4 = 0 .3 +1 .9 = 1 .5 +0 .9 = 5 +4 .8 = 6 -5 .9 = 1 .2 -0 .8 = 2 .2 -0 .5 = 1 .5 +2 .0 = 2 .3 +4 .8 = 1 0 -9 .8 = 1 .2 -1 .2 = 3 .5 +3 .5 = 1 .2 +1 .2 8 = 0 .9 +4 .2 = 3 .5 +1 .6 = 0 .3 2 +0 .7 4 = 0 .2 5 +0 .9 5 = 1 .2 5 -1 .2 5 = 0 .3 6 +2 .3 = 1 .2 5 +0 .3 3 = 1 .2 2 +0 .3 3 = 0 .8 +4 .2 = 3 .5 +1 .6 = 0 .5 +1 .3 = 0 .6 +0 .4 6 = 1 .5 -1 .4 2 = 1 .6 -1 .3 2 = 1 .2 -1 .1 2 = 2 .2 +.3 = 0 .8 -0 .4 = 1 .3 -0 .9 = 3 .5 -2 .6 = 1 .2 +0 .3 = 6 +3 .2 = 5 +4 .3 = 6 +5 .3 = 4 +3 .5 = 6 .2 +8 = 2 .6 +5 = 7 .7 +8 = 9 .9 -9 = 6 .3 -6 = 5 .2 +5 = 1 .1 +6 = 1 .2 +0 .6 = 1 .6 -1 = 0 .6 +0 .5 = 0 .1 2 +0 .1 3 = 0 .2 5 +0 .2 4 = 0 .2 2 +3 .8 = 0 .3 3 +0 .1 5 = 0 .1 4 +0 .2 5 = 0 .8 1 +0 .2 5 = 0 ...

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