1008
未知數的填空
1.請幫我填空:1. 45÷y=3 3. 42÷z=645÷y× ( )=3× ( ) 42÷z=( )=6×( )y=( ) z=( )2. 1008 13x=2412 4. 1090 7=25251008 13x-( )=2412-( ) 1090 7x-( )=2525-( )13x=( ) 7x=( )x=( ) x=( )5. z÷0.5-5=8 6. x÷0.4-12=6z÷0.5-5 ( )=8 ( ) x÷0.4-12 ( )=6 ( )z÷0.5=13 x÷0.4=18z÷0.5×( )=13×( ) x÷0.4×( )=18×( )z=( ) x=( )7. y÷0.7-8=9y÷0.7-8 ( )=9 ( )y÷0.7×( )=17×( )y=( ) 2.請幫我填 .-.×.÷1. x÷36=8x÷36( )36=5( )36x=2882. y÷0.6-5=4y÷0.6-5( )5=4( )5y÷0.6=9y÷0.6( )0.6=9( )0.6y=5.4