直接写得数.
7.8-5.8=________ | 3.5+6.5=________ | 6.3÷0.1=________ | 91-54=________ |
910÷70=________ | -=________ | ×=________ | +=________ |
6÷=________ | 35×20%=________. |
估算.
32×49 | 63×29 | 52×68 | 43×22 | 23×39. |
7.8-5.8=________ | 3.5+6.5=________ | 6.3÷0.1=________ | 91-54=________ |
910÷70=________ | -=________ | ×=________ | +=________ |
6÷=________ | 35×20%=________. |
32×49 | 63×29 | 52×68 | 43×22 | 23×39. |