1.计算。(28%)
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 =
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.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%)