1.2) 100%-80
20%-x
x=(20*80):100=16
4)100%-900
35%-x
x=35*900:100=350
6)100%-1000
75%-x
x=75*1000:100=750
2 .2)40%-40
100%-x
x=100*40:40=100
4)25%-43
100*43:25=172
6)150%-27
100*27:150=18
№ 173 1)
2. 20% от 80 = 16
80 : 100 * 20 = 0,8 * 20 = 16
4. 35% от 900 = 315
900 : 100 * 35 = 9 * 35 = 315
6. 75% от 1000 = 750
1000 : 100 * 75 = 10 * 75 = 750
№ 173 2)
2. 40% равно 40 = 100
40 : 40 * 100 = 1 * 100 = 100
4. 25% равно 43 = 172
43 : 25 * 100 = 1,72 * 100 = 172
6. 150% равно 27 = 18
27 : 150 * 100 = 0,18 * 100 = 18
1.2) 100%-80
20%-x
x=(20*80):100=16
4)100%-900
35%-x
x=35*900:100=350
6)100%-1000
75%-x
x=75*1000:100=750
2 .2)40%-40
100%-x
x=100*40:40=100
4)25%-43
100%-x
100*43:25=172
6)150%-27
100%-x
100*27:150=18
№ 173 1)
2. 20% от 80 = 16
80 : 100 * 20 = 0,8 * 20 = 16
4. 35% от 900 = 315
900 : 100 * 35 = 9 * 35 = 315
6. 75% от 1000 = 750
1000 : 100 * 75 = 10 * 75 = 750
№ 173 2)
2. 40% равно 40 = 100
40 : 40 * 100 = 1 * 100 = 100
4. 25% равно 43 = 172
43 : 25 * 100 = 1,72 * 100 = 172
6. 150% равно 27 = 18
27 : 150 * 100 = 0,18 * 100 = 18