直接写出结果(近似值符号的只要求估算).
2005+699= 0.45×101= 252÷39≈ 0.25×8.5×4=×
=
÷
=
+
= 4.8×11﹣4.8= 1÷
×1÷
= 2÷0.02= 31×197≈ 2.68+9﹣2.68+9=
直接写得数.
0.36+4= 0×= 5.7﹣0.9= 0.5÷0.25=
4×÷4×
= 0.2 2=
÷80%=
+
=
81×=(
﹣
)×12=
直接写出得数.
(1)+
=(2)1÷
=(3)
×26=(4)
÷
=
(5)﹣
=(6)12÷
×0=(7)2+
=(8)
×
=
(9)+
+
=(10)
×
×5=
直接写得数.+
= 1﹣
=
+
=
﹣
=
1﹣28%=×16=
×
= 36÷
=
÷
= 25×40%=
直接写出得数.
40×0.25= 1.25×0.8= 0.1÷0.01= 0.6+1.9=
3.5﹣2.25= 12.8÷4=+
=
﹣
=
12×= 1÷
=
×
=
÷
=