用递等式计算.16×12513×19÷13×197.54-(2.54+3.12)415÷[(57-314)÷34].-数学
题文
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答案
(1)16×125, =2×8×125, =2×(8×125), =2×1000, =2000; (2)
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(3)7.54-(2.54+3.12), =7.54-2.54-3.12, =5-3.12, =1.88; (4)
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题文
|
答案
(1)16×125, =2×8×125, =2×(8×125), =2×1000, =2000; (2)
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=
(3)7.54-(2.54+3.12), =7.54-2.54-3.12, =5-3.12, =1.88; (4)
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