表示什么数?
(1)93÷ =188 (2) +65=98
(3)85﹣ =26 (4) ﹣19=31
(5) ×12=84 (6)23× =115
(7)50× =1500 (8) ×19=437
(9)169÷ =13 (10)625÷ =25
(11) ÷26=8 (12) ÷39=12.
20×9= . 40÷60= 80× =320
×50=350 180÷ =90 60× =480
320÷ =80 ÷50=7 45÷ =5
23×3= 69210÷3= 7040× =160
×30=180 ×5=300 ÷9=9
8× =640.
各式中的 表示什么数?
(1)193+ =325 (2)72× =216
(3) ﹣82=118 (4) ×45=405
(5)26.35+ =60.58 (6)96÷ =8
(7)﹣ = (8)+ =
(9)5+ =2×8 (10)9× =54÷2
(11) +26=65﹣22 (12)5× =80+÷2
(13 + =36 (14) × =81.
表示什么数?
(1)29+ =35 =35﹣29
(2) ﹣32=7 =7+32
(3) ×9=63 =63÷9
(4) ÷6=12 =12×6.
已知○+△=□,●×▲=■,下面哪算式是正确的?正确的画“√”,错误的画“×”.
(1)△+□=○
(2)○+□=△
(3)□﹣○=△
(4)▲×■=●
(5)■÷●=▲
(6)■÷▲=● .
求横线里的数:
(1)54.22﹣ =36.78
(2)42.9÷ =14.3
(3)35× =35.35
(4)3.6+ =26.4
(5) ÷1.4=2.8
(6) ﹣0.75=8.75.
试题篮
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