口算(1)70×80=______3.7×0.5=______3.2×100=______8.9-3.8=______(2)3.8+2.5+6.2=______12-6.2-3.8=______1.7+0.43+3.3=______3.4-1.5-0.5=______(3)89+19--五年级数学

题文

口算
(1)70×80=______ 3.7×0.5=______3.2×100=______8.9-3.8=______
(2)3.8+2.5+6.2=______12-6.2-3.8=______1.7+0.43+3.3=______ 3.4-1.5-0.5=______
(3)
8
9
+
1
9
--
2
7
=______ 1.4×5=______650-470=______79+2.1=______
(4)3.14×3=______ 6.7+3.4=______2.01×0.4=______
6
13
+
7
13
=______
(5)3.99+5.2=______23+6.68=______7×0.08=______0.25×0.4=______
(6)22×0.2=______99.9+1=______0.72÷6=______3.9÷1.3=______
(7)0.8×0.8=______5.88+3.12=______1.9+2.1=______26÷2.6=______
(8)340÷17=______9.3÷0.3=______13×4=______3.6×5=______
(9)1.5×4=______20×16=______28×3=______3.2÷4=______
(10)0.28×100=______3200÷1000=______0.5×100=______4×0.125=______
(11)340+120=______
1
4
+
1
2
=______2.5÷5=______4.95×10=______
(12)12-
1
2
-
1
2
=______1÷0.25=______5×0.13=______12×0.05=______
(13)3.08÷0.1=______0.35×6=______25÷0.5=______1.5×3=______
(14)4.3-2.7=______8.1÷0.9=______12÷1.2=______0.48÷6=______
(15)2.6÷26=______ 0.72×5=______4.8+3.2=______ 5.7÷0.3=______.
题型:填空题  难度:中档

答案

(1)70×80=5600 3.7×0.5=1.853.2×100=3208.9-3.8=5.1
(2)3.8+2.5+6.2=12.5 12-6.2-3.8=2 1.7+0.43+3.3=5.43 3.4-1.5-0.5=1.4
(3)
8
9
+
1
9
-
2
7
=
5
7
1.4×5=7 650-470=18079+2.1=81.1
(4)3.14×3=9.42 6.7+3.4=10.12.01×0.4=0.804
6
13
+
7
13
=1
(5)3.99+5.2=9.1923+6.68=29.687×0.08=0.560.25×0.4=0.1
(6)22×0.2=4.499.9+1=100.90.72÷6=0.123.9÷1.3=3
(7)0.8×0.8=0.645.88+3.12=91.9+2.1=426÷2.6=10
(8)340÷17=209.3÷0.3=3113×4=523.6×5=18
(9)1.5×4=620×16=32028×3=843.2÷4=0.8
(10)0.28×100=283200÷1000=3.20.5×100=504×0.125=0.5
(11)340+120=460
1
4
+
1
2
=
3
4
2.5÷5=0.54.95×10=49.5
(12)12-
1
2
-
1
2
=111÷0.25=45×0.13=0.6512×0.05=0.6
(13)3.08÷0.1=30.80.35×6=2.125÷0.5=501.5×3=4.5
(14)4.3-2.7=1.68.1÷0.9=912÷1.2=100.48÷6=0.08
(15)2.6÷26=0.1 0.72×5=3.64.8+3.2=8 5.7÷0.3=19.

据专家权威分析,试题“口算(1)70×80=______3.7×0.5=______3.2×100=______8.9-3.8=..”主要考查你对  小数的加法和减法  等考点的理解。关于这些考点的“档案”如下:

小数的加法和减法

考点名称:小数的加法和减法

  • 学习目标:
    1、学习、探索小数加法和减法的计算方法。 
    2、理解小数点对齐的道理,掌握小数加法和减法的计算方法。