Calcula:
1...... + 20 + + 40 = + 20 + 40 = + 60
2.......+ 28 + + 0 = + 28 + 0 = + 28
3........ + 20 + - 40 = + 20 - 40 = - 20
4.........- 20 + + 40 = - 20 + 40 = + 20
5.........- 20 + - 40 = - 20 - 40 = - 60
6.........+ 0 + - 1 =
7....... -100 + + 0 =
8.....-0,123 + - 1 =
9......+ 1234 + -1 =
10. ..-0,123 + - 0,1 =
Calcula:
1........ 45 + 96 = 45 + 96 = 141
2........ 68 + 0 =
3......... 52 + 52 =
4........ -20 + 40 =
5.........-20 + -40 = -20 - 40 = - 60
6........ 0 + - 1 =
7...... -100 + 0 =
8....-6,123 + 1 =
9...... 1234 + -1 =
10.....-0,16823 +. -0,15 =
Calcula:
1...... + 30 + + 40 =
2...... 28 + 0 = 28 + 0 =
3....... 0 + -40 =
4...... -0 + 40 =
5......30 + -40 =
6.....-30 + -40 =
7.....-40 + 30 =
8......40 + -30 =
9......34 + -1 =
10. .. -0,123 + -0,1 =
MEMORIZAR
