脱式计算,能简算的要简算.13.6-(2.6+0.25÷25%)1200÷〔56×( 3 7 - 3 8 )
脱式计算,能简算的要简算.13.6-(2.6+0.25÷25%)1200÷〔56×(37-38)〕(613×1.7+713×1.7)÷7101375+450÷15×25....
脱式计算,能简算的要简算.13.6-(2.6+0.25÷25%)1200÷〔56×( 3 7 - 3 8 )〕( 6 13 ×1.7+ 7 13 ×1.7)÷ 7 10 1375+450÷15×25.
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(1)13.6-(2.6+0.25÷25%) =13.6-(2.6+1), =13.6-3.6, =10; (2)1200÷〔56×(
=1200÷(56×
=1200÷(24-21), =1200÷3, =400; (3)(
=(
=1×1.7×
=
(4)1375+450÷15×25 =1375+30×25, =1375+750, =2125. |
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