递等式计算。(能巧算的要巧算)
(6.56×4.6-8.2-1.8)÷0.01 6.8÷(25×0.34) 10.1×8.8
3.5×6.5+6.5×6.5 78.6-1.8×(7-0.5) 9.2÷2.5
(6.56×4.6-8.2-1.8)÷0.01 6.8÷(25×0.34) 10.1×8.8
3.5×6.5+6.5×6.5 78.6-1.8×(7-0.5) 9.2÷2.5
各式中的( )代表几?
26+( )=127.9 15×( )=105
( )=________ ( )=________
( )-72=72 ( )÷7=11
( )=________ ( )=________
26+( )=127.9 15×( )=105
( )=________ ( )=________
( )-72=72 ( )÷7=11
( )=________ ( )=________
计算( )=?
(_______)+1.75=8.25 (______)-15.7=1.57
24.8=12+2×(____) 50-3×(____)=23
(_______)+1.75=8.25 (______)-15.7=1.57
24.8=12+2×(____) 50-3×(____)=23