题目列表(包括答案和解析)
口算.
|
(1)4.8 +5.7= |
(2)4.36 +1.64= |
|
(3)9 -2.5= |
(4)10 -0.36= |
|
(5)2.39 +1.25= |
(6)5.38 -4.28= |
|
(7)0.36 +0.47= |
(8)0.91 -0.38= |
|
(9)2.4 +3.6-1.2= |
(10)4.5 -1.2+0.4= |
|
(11)7.25 +1.73+2.75= |
(12)10 -0.15-0.85= |
口算.
|
(1)4.8 +5.7= |
(2)4.36 +1.64= |
|
(3)9 -2.5= |
(4)10 -0.36= |
|
(5)2.39 +1.25= |
(6)5.38 -4.28= |
|
(7)0.36 +0.47= |
(8)0.91 -0.38= |
|
(9)2.4 +3.6-1.2= |
(10)4.5 -1.2+0.4= |
|
(11)7.25 +1.73+2.75= |
(12)10 -0.15-0.85= |
口算.
|
(1) |
(2) |
(3) |
(4) |
|
24 ÷3= |
12 ×5= |
4 ×7+25= |
430 -160= |
|
36 ÷4= |
14 ×3= |
45 ÷5+8= |
390 +390= |
|
45 ÷5= |
17 ×4= |
10 ×6-12= |
820 -650= |
|
64 ÷8= |
16 ×2= |
63 +78+0= |
594 -9= |
|
72 ÷9= |
13 ×5= |
27 ÷3-9= |
798 +7= |
口算.
|
(1) |
(2) |
(3) |
(4) |
|
24 ÷3= |
12 ×5= |
4 ×7+25= |
430 -160= |
|
36 ÷4= |
14 ×3= |
45 ÷5+8= |
390 +390= |
|
45 ÷5= |
17 ×4= |
10 ×6-12= |
820 -650= |
|
64 ÷8= |
16 ×2= |
63 +78+0= |
594 -9= |
|
72 ÷9= |
13 ×5= |
27 ÷3-9= |
798 +7= |
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