9个鸡蛋大约450 三年级的小刚同学体重大约是30
840÷4=
16×5=
200-150÷3=
4×5÷4×5=
6×208=
620×4×0=
475×6= 96×7= ★721÷7 = 验算:
308×9= 76÷4= ★590÷8 = 验算: