内容发布更新时间 : 2024/12/23 13:55:29星期一 下面是文章的全部内容请认真阅读。
19.【解答】解:①÷=②÷=③15÷74= ④÷=
20.【解答】解:(1)÷=5(2)÷=15(3)÷=(4)÷11= 21.【解答】解:×= ÷= ×= ÷=
22.【解答】解:×= ÷=65 *÷≈
23.【解答】解:①÷=②÷6≈③÷≈ ④÷=⑤÷4=⑥÷6=
24.【解答】解:÷= ÷= ÷= ÷9= ÷= ÷18= ÷= ÷=
25.【解答】解:
(1)÷=15(2)÷≈(3)÷≈1.(4)÷=(5)÷18≈(6)÷≈ 26.【解答】解:÷15= ÷8= ÷34= ÷36= ÷26= ÷27=
27.【解答】解: ①÷=②÷≈③÷≈ ④÷≈⑤÷≈⑥÷≈ 28.【解答】解:÷= ×= ×≈ ÷=196 8÷= ÷12=
29.【解答】解:÷= ÷= ÷=101 6÷= ÷= ÷=36
30.【解答】解:(1)×=(2)×= (3)×=(4)6÷24=(5)÷75=
(6)÷7=(7)÷11=(8)÷31=(9)÷19= (10)×=
31.【解答】解:(1)÷12= (2)328÷16= (3)÷27= (4)÷19=
32.【解答】解:÷15= ÷13= ÷= ÷≈ ÷= ÷=
33.【解答】解:÷4=
÷29= ÷27= ÷15= ÷6= ÷11= ÷24= ÷52=
34.【解答】解:÷32= +=21 ×= ﹣=
35.【解答】解:(1)÷=(2)64×= (4)÷≈(5)÷=(6)×=
36.【解答】解:×= ×320=432 26÷=200 48÷≈
37.【解答】解:★÷═ ×= ★﹣=
38.【解答】解:÷42= ÷95=; ★÷=15 7÷=20 ÷= 42÷8=
39.【解答】解:÷75= ÷=
3)÷=150( ×=
40.【解答】解:×= ÷≈ ÷=
41.【解答】解:
(1)÷12=(2)÷=(3)7÷=20(4)÷9=
(5)13÷11=1.(6)÷33=(7)19÷12=(8)÷=80 42.【解答】解:÷45=; ÷=7; ÷=60;
43.【解答】解:×≈ ÷=30 ÷3=
44.【解答】解: (1)÷28= (2)÷=360 (3)÷≈
45.【解答】解:×= ÷= ÷≈
46.【解答】解:÷18= ×= ÷≈
47.【解答】解:÷23= ÷=
÷=(验算) 48.【解答】解:70÷= ÷=670
÷≈.
49.【解答】解:÷= ÷12= ÷≈ 50.
【解答】解:×= ÷= ÷=