张军家买回一袋大米，平均每天吃2千克，吃了9天后还剩下7千克．这袋大米原有多少千克？
直接写出得数 （1）6×=×=××2=+×0= （2）÷= 4.8÷=÷37.5%= 15%×60= （3）16：24=：= 1÷（0.36+0.14）=×÷×=
×10=÷=÷80%= 8×12．%=×0×=﹣= 0.5+=×=÷3= （﹣）×=
口算．×=+=×===×5=÷2=﹣=
口算． 0.75+= 0÷=×=+20%= 30÷=×12×= 63：27=：=
直接写出得数．==========
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×
=
×
×2=
+
×0=
÷
= 4.8÷
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÷37.5%= 15%×60=
：
= 1÷（0.36+0.14）=
×
÷×==×=××2=+×0=÷= 4.8÷=÷37.5%= 15%×60=：= 1÷（0.36+0.14）=×÷×=
×10=
÷
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÷80%=
×0×
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﹣
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×
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÷3=
﹣
）×
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×
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+
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×
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×5=
÷2=
﹣
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= 0÷
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×
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+20%=
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×12×
= 63：27=
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