Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
13 + 20 = ______
29 − 10 = ______
41 − 10 = ______
65 + 10 = ______
45 + 10 = ______
77 + 20 = ______
60 + 20 = ______
70 − 10 = ______
60 + 10 = ______
7 × 10 = ______
43 − 10 = ______
52 + 10 = ______
36 − 10 = ______
6 × 10 = ______
74 + 10 = ______
83 + 10 = ______
84 + 20 = ______
37 + 20 = ______
20 + 20 = ______
79 − 10 = ______
