Calculo mental_ practica 1

409+399+191=

• 1000

• 999

• 1001

• 1002

0981+1001+908=

• 2870

• 2980

• 2890

• 2780

559+3030+002=

• 3591

• 3590

• 3580

• 3581

25.4+10.5+58.9=

• 84.9

• 89.4

• 98.4

• 94.8

11.15+16.10+37.18=

• 65

• 60.3

• 64.43

• 46.43

91.3+16.11+31.09=

• 138.5

• 140

• 183.5

• 158.3

23.33+18.09+45.01=

• 58.43

• 68.43

• 86.43

• 98.43

10.01+20.001+30.090=

• 101.06

• 60.101

• 60.10

• 10.6

½ + 1/2 + 1/2=

• 1 ½

• 1 1/4

• 1 3/4

• 2

2/3 + ½ + ¼=

• 5/3 O 1 2/3

• 3/5

• 1 1/2

• 1 1/3