用递等式计算,能简算的要简算.(1)100.18-9.6+18.53(2)0.963+23.89-0.063(3)2.5×0.3÷2.5×0.3(
用递等式计算,能简算的要简算.(1)100.18-9.6+18.53(2)0.963+23.89-0.063(3)2.5×0.3÷2.5×0.3(4)2.8×10.1(5...
用递等式计算,能简算的要简算.(1)100.18-9.6+18.53(2)0.963+23.89-0.063(3)2.5×0.3÷2.5×0.3(4)2.8×10.1(5)51×1.2-1.2(6)0.36×(15.23-9.63)
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(1)100.18-9.6+18.53, =90.58+18.53, =109.11; (2)0.963+23.89-0.063, =(0.963-0.063)+23.89, =0.9+23.89, =24.79; (3)2.5×0.3÷2.5×0.3, =2.5÷2.5×0.3×0.3, =1×0.3×0.3, =0.09; (4)2.8×10.1, =2.8×(10+0.1), =2.8×10+2.8×0.1, =28+0.28, =28.28; (5)51×1.2-1.2, =(51-1)×1.2, =50×1.2, =60; (6)0.36×(15.23-9.63), =0.36×5.6, =2.016. |
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