(0.8×7+2.4) ×5
6.28×1.25×0.8
78-14.8-5.2
770-707=
630÷30=
200×5=
125×8=
360-60÷15=
135+65=
50×400=
400×40=
330÷3=
15×9÷15×9=
27÷3×0= 160+40÷4= 38+5×(12﹣8)=
240﹣30×3= 21﹣0÷21= 0.309×100÷10=
15.7+3.58+4.3+5.42 8×14×125 25+25×39 1680÷[(121-109)×4]
①23.2-17.45+7.68
②106×(76-840÷24)
③350÷14+23×16
④432÷[12×(57-51)]
⑤(976-244)÷(18+43)
630÷18÷5 25×(8+20) 125÷[(568+82)÷26]
①74×78+26×78
②101×99
③43.51+20.4+56.49+9.6