A.3.2×4.6=14.72 | B.0.32×4.6=14.72 | C.1.472÷3.2=0.46 | D.147.2÷3.2=46 |
A.a+b | B.ab | C.2(a+b) |
A. | B. | C. |
A.20°,87° | B.47°,60° | C.37°,60° |
要使578-(156+)计算简便,里可以是( )。
A.36 | B.344 | C.219 |
A.2340 | B.2262 | C.2184 |
A.6 | B.7 | C.5 |
A.1.5÷1.39 | B.3.5÷3.5 | C.0.13÷1.2 |
A.旭日东升 | B.守株待兔 | C.瓜熟蒂落 |
A.整数 | B.无限小数 | C.有限小数 |