判断下列各数是不是循环小数,是的打√.1.5353… √0.19292… 5.314162 ×3.246571 1.065 ×8.4666 4.66… √3.33… 2.142857142857… .
涂一涂,算一算,填一填. (1) + = + = (2) ﹣ = ﹣ = .
我会填. (1) = = ; (2) =﹣ = .
在横线里填上合适的数. (1)+ = (2)+ =1 (3)﹣ = (4) ﹣=0.
看图写算式. (1) + + = . × = (2) + = = . × = = (3) + + + = . × = .
+=+= .(判断对错)