直接写得数:13.75-7.5=600÷15=6.4×1.25=0.1-0.1+0.1=0.1÷0.1×0.1=4.89×0.2×0.5=0.25×4÷0.25×4=(1.01-0.91)×5=36×0.7×2.5=12+13=14+113=56−12=112×23=57×10=34÷75%=213×67=4÷445=112−1
| 直接写得数:13.75-7.5= | 600÷15= | 6.4×1.25= | 0.1-0.1+0.1= |
| 0.1÷0.1×0.1= | 4.89×0.2×0.5= | 0.25×4÷0.25×4= | (1.01-0.91)×5= |
| 36×0.7×2.5= | += | +1= | −= |
| 1×= | ×10= | ÷75%= | 2×= |
| 4÷4= | 1−1÷1= | 0.6×= | 1−−0.75= |
| +−×= | 7×50%÷1×50%+0= | 1.25÷1×5%= | 4÷+×4= |
| +0.67+1= | 4−(3+0.73)= | (++)×6= | (−0.25)÷(7−2)= |
答案和解析
| 13.75-7.5=6.25 | 600÷15=40 | 6.4×1.25=8 | 0.1-0.1+0.1=0.1 |
| 0.1÷0.1×0.1=0.1 | 4.89×0.2×0.5=0.489 | 0.25×4÷0.25×4=16 | (1.01-0.91)×5=0.5 |
| 36×0.7×2.5=63 | += | +1=1 | −= |
| 1×=1 | ×10= | ÷75%=1 | 2×=2 |
| 4÷4= | 1−1÷1= | 0.6×=0.24 | 1−−0.75=0 |
| +−×= | 7×50%÷1×50%+0=1.75 | 1.25÷1×5%=0.05 | 4÷+×4=17 |
| +0.67+1=2.67 | 4−(3+0.73)=0.27 | (++)×6=6 | (−0.25)÷(7−2)=0 |
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