信息窗4练习设计
1、160 ÷ 2 = 80 kg/h
80 × 7 = 560 kg
2、40 × 30 = 1200(人)
1200 ÷ 24 = 50(行)
3、250 ÷ 5 = 50(套)
3000 ÷ 50 = 60(天)
4、24 × 20 = 480(页)
480 ÷ 50 = 16(天)
5、21x = 3 × 63
x = 9
2.8x = 5 × 0.8
x = 10/7
3x = 5/6 × 36
x = 10
0.6x = 30 × 2.4
x = 120
6、6 × 6 × 80 = 2880(块)
2880 ÷ 8 ÷ 8 = 45(块)
7、3吨 = 3000千克
3000 ÷ 200 = 15
15 × 76 = 1140(kg)
1140千克 = 1.14吨
8、44 ÷ 4 = 11
11 × 5 = 55(本)