Zadaniku w załączniku
z.5
2/3 + 3/4 = 8/12 + 9/12 = 17/12 = 1 5/12
3/4 - 2/3 = 9/12 - 8/12 = 1/12
2/3 : 3/4 = 2/3 * 4/3 = 8/9
2/3 * 3/4 = 6/12 = 1/2
Odp. 1 5/12
z.6
2/3 + 2/10 = 2/3 + 1/5 = 10/15 + 3/15 = 13/15
2/3 *0,2 = 2/3 * 1/5 = 2/15
2/3 - 0,2 = 2/3 - 1/5 = 10/15 - 3/15 = 7/15
2/3 : 0,2 = 2/3 : 1/5 = 2/3 * 5 = 10/3 = 3 1/3
Odp. 2/15 = 2/3 *0,2
z.7
2*(3/10) + 1/3 = 6/10 + 1/3 = 3/5 + 1/3 = 9/15 + 5/15 = 14/15
Odp. 14/15 l
z.8
0,5 * 54 = 27
1/3 * 54 = 54/3 = 18
54 - 27 - 18 = 9
z.9
1/3 * 135 = 135/3 = 45
0,6 *45 = 27Odp. 27
z.10
0,3*[ 5 1/5 - 3,7]^2 - 0,075 = 0,3*[5,2 - 3,7]^2 - 0,075 =
= 0,3 *( 1,5)^2 - 0,075 = 0,3 * 2,25 - 0,075 = 0,675 - 0,075 = 0,600 = 0,6 = 3/5
Odp. 3/5
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z.5
2/3 + 3/4 = 8/12 + 9/12 = 17/12 = 1 5/12
3/4 - 2/3 = 9/12 - 8/12 = 1/12
2/3 : 3/4 = 2/3 * 4/3 = 8/9
2/3 * 3/4 = 6/12 = 1/2
Odp. 1 5/12
z.6
2/3 + 2/10 = 2/3 + 1/5 = 10/15 + 3/15 = 13/15
2/3 *0,2 = 2/3 * 1/5 = 2/15
2/3 - 0,2 = 2/3 - 1/5 = 10/15 - 3/15 = 7/15
2/3 : 0,2 = 2/3 : 1/5 = 2/3 * 5 = 10/3 = 3 1/3
Odp. 2/15 = 2/3 *0,2
z.7
2*(3/10) + 1/3 = 6/10 + 1/3 = 3/5 + 1/3 = 9/15 + 5/15 = 14/15
Odp. 14/15 l
z.8
0,5 * 54 = 27
1/3 * 54 = 54/3 = 18
54 - 27 - 18 = 9
z.9
1/3 * 135 = 135/3 = 45
0,6 *45 = 27Odp. 27
z.10
0,3*[ 5 1/5 - 3,7]^2 - 0,075 = 0,3*[5,2 - 3,7]^2 - 0,075 =
= 0,3 *( 1,5)^2 - 0,075 = 0,3 * 2,25 - 0,075 = 0,675 - 0,075 = 0,600 = 0,6 = 3/5
Odp. 3/5
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Pozostałe zadania zostały dobrze rozwiązane.