1.36+ =5.6310.02﹣ =8.88 ÷1.5=1.53.6× =18( )﹣=+( )=.
口×2.5﹣2.3=4.7,口中应填的数是 .
+47=236 ﹣32=45 36× =108.
28+ =90 ﹣130=240 16× =512.
×=+ =1﹣ = ÷=1.
填上合适的数: ×9=27 90﹣ =4 +12=56 56﹣ =52 21米+34米= 米 53厘米﹣41厘米= 厘米.