直接写数对又快!7.8+2.3= 0.8×4= 1.5×6= 39×0.01=20×1.5= 0.3×0.6= 7.8﹣1.9= 0.9×0.9=4.8×0.5= 3.68+6.32×0=
直接写得数 25×10%=×27=()×60== 72÷= 45×= 1÷==
计算+2.4÷4×÷9 1.68﹣÷2÷
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想一想,括号里能填整数几? (1)÷12= (2)÷3=.
(1)(2)(3) (4)(5)(6).