二、解决问题
★单元练习6
建议用时:6分钟
实际用时:分钟
65÷7 =
58+3 =
33÷9 =
27÷9 =
32÷4 =
62-5 =
4×7 =
70-6 =
62-16 =
65-36 =
70-30 =
29÷8 =
9×7 =
29+36 =
25+15 =
29+44 =
3×3 =
57÷8 =
63÷7 =
56+34 =
73-30 =
35+5 =
49-40 =
25+36 =
28-7 =
27-14 =
69-60 =
54+38 =
32÷7 =
70-70 =
59+20 =
79÷8 =
65÷8 =
53-4 =
90-70 =
470+280 =
49-33 =
83-45 =
260+550 =
60-52 =
93-27 =
710-250 =
17+32 =
67-43 =
370-290 =

65÷7 = 9……2
58+3 = 61
33÷9 = 3……6
27÷9 = 3
32÷4 = 8
62-5 = 57
4×7 = 28
70-6 = 64
62-16 = 46
65-36 = 29
70-30 = 40
29÷8 = 3……5
9×7 = 63
29+36 = 65
25+15 = 40
29+44 = 73
3×3 = 9
57÷8 = 7……1
63÷7 = 9
56+34 = 90
73-30 = 43
35+5 = 40
49-40 = 9
25+36 = 61
28-7 = 21
27-14 = 13
69-60 = 9
54+38 = 92
32÷7 = 4……4
70-70 = 0
59+20 = 79
79÷8 = 9……7
65÷8 = 8……1
53-4 = 49
90-70 = 20
470+280 = 750
49-33 = 16
83-45 = 38
260+550 = 810
60-52 = 8
93-27 = 66
710-250 = 460
17+32 = 49
67-43 = 24
370-290 = 80

拓展园地
君君做家务，洗拖把需要2分钟，拖地需要10分钟，用洗衣机洗衣服需要40分钟。那么，君君最少用多少分钟才能做完家务？

2+10=12（分钟）
12＜40
答：君君最少用40分钟才能做完家务。