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3.4+5.9= 2.8-2= 2.4+4.2=
10-0.9= 4.6+6.4= 9.6-7.8=
5.6+3.2= 13.6+2= 4.7-2.8= 6-2.4=
4.2×100= 8.3÷10= 25×40= 18-9×0=
4.8+2.1= 6.7-0.5= 0÷280= 264-（64+23）=
9-2.9= 4.2+8= 32-2×0= 6×6÷6×6=
22×30= 609÷3= 3.7+2.1= 42×39≈
240÷8= 70×90= 8.9-0.5= 419÷6≈
①45×54=
②67×98=
③405÷3=
④630÷6=
⑤61.3+38.7=
⑥★429÷4=
进入组卷
