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206 - 132 = 745 464 = 476 145 = 791 198 = 311 824 = 694 - 395 = 195 322 = 325 838 = 109 270 = 661 - 168 = 154 172 = 791 - 448 = 390 - 231 = 141 - 80 = 779 - 483 = 427 762 = 455 338 = 698 15
口算练习1 42=84=35=75=63=56=88=53=87=43=48=39=31=36=68=22=26=64=72=77=15=97=24=94=92=99=79=78=28=32=46=25=54=96=83=34=66=14=67=29=89=58=45=85=47=93=91=69=16=37=52=86=82=73=27=23=76=61=74=17=33=49=95=55
509601633-345-43916=56-615-1147-2265-231935=68-5790-569-36100-28126=96-9081210337471752=158318372-304228113=811471-69333048-77524=4734503672-61712644=99-65277182350182846=326582689-51631083=191255-212
拐李小学二年级下册数学口算练习题 :__________2×1???????? 2×2???????? 2×3???????? 2×4 32÷4×9= 5×6???????? 5×7???????? 5×8???????? 5×9 40÷5×7=9×6????????
苏教版四年级数学下册口算练习题 一二三四五1210×20=600×0=450÷50 =110×40=70400=2600×8=210×3=20×34=260-60=210×4=3320÷80=910÷70=480÷20=800÷50=630÷30=423×300=30×310=120×20 =40×220=700×80=5600×30=50×600=410×20=200×70
苏教版二年级下册数学口算练习题2×1???????? 2×2???????? 2×3???????? 2×45×6???????? 5×7???????? 5×8???????? 5×99×6???????? 9×7???????? 9×8???????? 9×93×6???????? 3×7???????? 3×8???????? 3×98×1???????? 8×2???????? 8×3??
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苏教版三年级数学上册口算练习题402×5=231×2=321×4=107×4=48÷4=78÷3=88÷4=60÷5=72÷2=204×3=304×3=63÷3=125×8=97-28=52-19=2847=54-27=55÷5=69÷3=57÷3=50×20=253×7=325×5=746×3=22×3=81÷9=40×4=48×2=18÷9=800×7=18÷3=13×7=7924=15
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