口算.
35.7+14.8= | 24.8-14.5= | 17-14.5= | 287+138= | 657-154= |
3.65×10= | 9.05÷10= | 30-19.2= | 25÷10-25÷10= | 4.2-4.2×0= |
34.5×10+55= | 0÷25+2.5= | 8.65-2.3-1.65= | 0.01×100+100= |
递等式计算
0.7+9.6×0.25 | (2.44-1.8)÷0.4×2.5 |
23.4-0.8-13.4-7.2 | [3.2-3.2×(30.4-29.85)]÷1.8. |
35.7+14.8= | 24.8-14.5= | 17-14.5= | 287+138= | 657-154= |
3.65×10= | 9.05÷10= | 30-19.2= | 25÷10-25÷10= | 4.2-4.2×0= |
34.5×10+55= | 0÷25+2.5= | 8.65-2.3-1.65= | 0.01×100+100= |
0.7+9.6×0.25 | (2.44-1.8)÷0.4×2.5 |
23.4-0.8-13.4-7.2 | [3.2-3.2×(30.4-29.85)]÷1.8. |