任何一个三角形一定有两个锐角 .
直接写出得数.+0.125= 2÷
×
= 3.9÷10%= 32÷1000=
×
= 1÷
= 0.7:0.25=
+
=
1.03+0.07= 402=
直接写出得数.
32+23=
45分:小时=
0÷=
543﹣(143+299)=
100÷12.5÷8=
直接写出得数.
180÷60= 2﹣= 1.75+
=
+
=
0÷= 10×10%= 2.5×
=
÷
=
﹣0.4= 1.8×
=
直接写得数.
1÷= 0.32÷0.8= 2.3+3.57= 7.3﹣2.8=
÷
=
+
= 1÷
×
= 2×
+5=
+4﹣
+4=
×99+
=
口算.
1÷0.5= 1
﹣1
÷1
= 1.25×
×8=
×5.6=
÷5×
×5= 4
×0×4
= 120×(
+
)=
+0.29+
=
3﹣
﹣
=(
﹣
)×20=