题目内容
| 脱式计算,能简算的要简算. 3.5×4.5×4; | 12.6-1.9+1.9-3.39; |
| 1÷[0.1÷(1.43-0.93)]; | 4.4×4.6+5.4×4.4. |
(1)3.5×4.5×4
=3.5×(4.5×4)
=3.5×18
=63;
(2)12.6-1.9+1.9-3.39
=12.6-3.39+(1.9-1.9)
=9.21+0
=9.21;
(3)1÷[0.1÷(1.43-0.93)]
=1÷(0.1÷0.5)
=1÷0.2
=5;
(4)4.4×4.6+5.4×4.4
=(4.6+5.4)×4.4
=10×4.4
=44.
=3.5×(4.5×4)
=3.5×18
=63;
(2)12.6-1.9+1.9-3.39
=12.6-3.39+(1.9-1.9)
=9.21+0
=9.21;
(3)1÷[0.1÷(1.43-0.93)]
=1÷(0.1÷0.5)
=1÷0.2
=5;
(4)4.4×4.6+5.4×4.4
=(4.6+5.4)×4.4
=10×4.4
=44.
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