1.计算。(28%)

(1)找新家，连一连。(12%)(每题1分)

(2)算一算。(12%)(每题1分)

二年级下册数学第一单元检测题：9 1 + 6 = 7 8 - 3 = 10 - 18 2 =

30 - 5 6 = 4 + 35 7 = 9 5 + 5 =

28 4 - 1 = 9 + 8 4 = 30 - 54 6 =

8 8 - 8 = 0 - 0 1 = 60 10 + 10 =

(3)它们相差多少?用你喜欢的方法算一算。(4%)(每题2分)

2.填空。(10%)(每小题1分)

(1)2 4 + 2 6 = ( ) 2 = ( )

7 5 - 5 3 = ( ) 5 = ( )

3 9 + 6 9 = ( ) ( ) = ( )

11 8 - 8 4 = ( ) ( ) = ( )

(2) ______ ______ = 12

______ ______ = 24

______ ______ = 40

(3)相差多少?

3.填上适当的运算符号。(24%)

(1)在 里填上、或=。(12%)(每题2分)

5 3 4 3 6 9 7 8 2 10 5 4

7 6 6 7 0 9 0 + 9 2 8 8 5

(2)在 里填上+、-、或。(12%)(每题2分)

8 4 = 32 8 4 = 12 8 4 = 2 8 4 = 4

5 5 1 = 26 0 9 9 = 9

4. 中最大可以填几?(12%)(每题2分)

3 26 7 41 5 30

63 9 6 50 81 10

5.综合应用。(26%)

(1)学校开展冬季运动会。(9%)(每题3分)

①

① 爷爷的年龄与小胖相差多少岁?(3%)

② 爸爸今年几岁?(3%)

③ 爸爸的年龄比爷爷小多少岁?(3%)

(3)每层楼高大约是3米，这座楼(如右图)大约高多少米?(4%)

(4)这辆模型小轿车需要多少钱?(4%)