11.脱式计算,能简算的要简算.
4.15-1.76-0.24 | 15×27-3000÷25 | 8.29+3.75+0.71+6.25 |
125×89×8 | (324-285)×12÷26 | 428×78+572×78 |
10.直接写得数.
40×50= | 0.6-0.47= | 0.75×100= | 5.6÷100×10= |
125×8= | 1-0.96= | 0.8+4.72= | 0.5×$\frac{1}{10}$= |
7.拼成一个梯形至少要( )个等边三角形.
A. | 1 | B. | 2 | C. | 3 |
6.把600.6先缩小到原数的$\frac{1}{100}$,再扩大10倍后是( )
0 153901 153909 153915 153919 153925 153927 153931 153937 153939 153945 153951 153955 153957 153961 153967 153969 153975 153979 153981 153985 153987 153991 153993 153995 153996 153997 153999 154000 154001 154003 154005 154009 154011 154015 154017 154021 154027 154029 154035 154039 154041 154045 154051 154057 154059 154065 154069 154071 154077 154081 154087 154095 199269
A. | 0.6006 | B. | 6.006 | ||
C. | 60.06 D 600.6 |