750+708×32
253×203﹣103×253
3060÷36﹣322÷46
(25+73÷73+25)×101
3796÷52×26﹣1203
17×23+23×83.
口算大比拼.
400﹣35﹣65=(25+125)×4=0.93×100﹣13=13×25×4=0.16+3.7=5.19﹣3.9=
2﹣0.04=65.8÷100=10﹣(2.3+2.7)= 0.6+0.39=6+54÷6+54= 0÷12×(23+37)=
324+67+76.34×27+66×2799×52+52.
24×12+1313÷13 1795+376+624﹣595187÷[24﹣(22﹣9)]
102×79﹣79×2[348﹣(5895﹣720)÷15]×160 25×404.
直接写得数.
(40+4)×25=(125×9)×8=101×78=65×99+65= 58×54+58×46=