7. Arvuta. Ühenda punktid vastuste järjekorras.
7 x 4 + 14 = .....
8 x 5 + 15 = .....
7 x 3 + 13 = .....
8 x 4 + 16 = .....
9 x 5 + 15 = .....
6 x 4 + 6 = .....
8 x 3 + 14 = ..... |
9 x 4 + 14 = .....
5 x 3 + 16 = .....
9 x 3 + 13 = .....
4 x 9 - 16 = .....
4 x 8 - 20 = .....
3 x 7 - 11 = .....
6 x 3 - 17 = ..... |
7 x 5 - 32 = .....
2 x 9 - 16 = .....
5 x 7 - 14 = .....
3 x 8 - 13 = .....
5 x 9 - 6 = .....
4 x 7 - 21 = .....
9 x 2 - 9 = ..... |
|
8. Proovi, missugused arvud sobivad muutuja väärtusteks ja tõmba neile ringid ümber. |
3 x m < 20
5 x m > 20
7 x m < 56
9 x m > 45
8 x m > 48 |
2, 6, 8
3, 4, 5
7, 8, 9
5, 6, 7
6, 7, 8 |
 |
6 x s > 40
9 x s < 54
7 x s > 50
8 x s < 46
9 x s < 64 |
6, 7, 8
5, 6, 7
6, 7, 9
4, 5, 7
5, 7, 9 |
n x 7 < 30
n x 7 < 63
n x 7 > 40
n x 7 < 51
n x 7 < 28 |
3, 4, 5
10, 9. 8
5, 6, 7
8, 7, 9
6, 7, 4 |
g x 6 > 32
g x 6 < 48
g x 6 > 45
g x 6 < 47
g x 6 > 38 |
5, 6, 7
7, 8, 9
9, 8, 7
8, 7, 9
6, 7, 8 |
|
|