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Transcript

CONCURSO
CÁLCULO
MENTAL

1. 150 + 80

2. 260 + 70
3. 380 + 80
4. 650 + 70
5. 490 + 40

PRUEBA 1

6. 220 - 40

7. 510 - 50
8. 320 - 60
9. 630 - 50
10. 840 - 60

1. 5 x 7

2. 6 x 8
3. 3 x 6
4. 8 x 5
5. 6 x 4

PRUEBA 2

6. 6 x 20

7. 4 x 40
8. 3 x 70
9. 7 x 20
10. 6 x 60

1. 163 + 40

2. 262 + 40
3. 385 + 60
4. 697 + 40
5. 482 + 30

PRUEBA 3

6. 223 - 40

7. 512 - 50
8. 326 - 60
9. 635 - 50
10. 843 - 60

1. 7 x 7

2. 2 x 8
3. 3 x 9
4. 8 x 6
5. 6 x 3

PRUEBA 4

6. 6 x 600

7. 4 x 200
8. 3 x 600
9. 7 x 400
10. 6 x 400