精品资料
×√√×√×
三、选一选。
1.(3)2.(1)3.(3)4.(3)5.(4)6.(1)
四、1.直接写得数。
186 10000 68000 0
1176 210 258400 81
2.略。 3.略
五、略。
六、联系实际,解决问题。
1.(80 + 60) × 3=420(千米)
答:A、B两地之间相距420千米。
2.(1)180 × 40 + 100 × 60=1320(千克)
答:运来的大米和面粉一共1320千克。
(2)160 × 40=640(千克) 80 × 60=480(千克)
640 - 480=160(千克)
答:运来的大米多,比面粉多160千克。
3. 75×22=1650(元) 102×22 =2244(元)130 ×22=2860(元)
答:买单价130元的课桌比较合适。
4.(52+ 48)× 6 ÷ 2=300(米)
答。这座桥有300米长。
5.(785+ 785+ 105)× 2= 3350(元)
答。四年级捐款3350元。
精品资料
6.(12+3)×(5+3)- 12×5=60(平方厘米)
答:这个长方形面积增加了60平方厘米。
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