①3.8+4.6=
②6.2+7.9=
③12.4-2.8=
④12-2.4=
30×12= 99×0= 0.5+3= 92÷3≈ 237÷6≈
①32×24=
②82×46=
③535÷5=
④5.6+3.5=
⑤▲267÷4= 验算:
①56×28=
②36.7+8.9=
③78×35=
④832÷4=
⑤27.6-14.7=
⑥▲598÷7=
0.8+0.7□ 1.2-0.9□ 4.3-3.6□ 0.6+0.9□ 1.2+0.3□
21-1.6□ 3.4+0.9□ 2.5-1.3□ 3.6+0.1□ 1.4-0.8□
0.8-0.3□ 1.6-0.5□ 9.2-8.4□ 0.5+0.4□ 1.6+0.5□