=70-8
=62( )
改正:
=9×9
=81( )
①210+320=
②570+440=
③※820+389=
④826-666=
⑤900-555=
⑥※880-487=
算式:
①1.25×(30.1﹣24.91÷4.7)
②[ ﹣( ﹣ )]÷
③15.6×13.1﹣15.6﹣15.6×2.1
④2 ×23.4+11.1×57.6+6.54×28
⑤1234+2341+3412+4123
⑥ + + + + +
①
②1.25×1.3×80
③7.28-3.14+1.72-2.86
④
⑤
⑥