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
3 × 10 = ______
4 × 10 = ______
45 + 10 = ______
78 + 20 = ______
71 + 10 = ______
70 + 20 = ______
77 − 10 = ______
66 − 10 = ______
29 − 10 = ______
98 − 10 = ______
40 − 10 = ______
67 + 10 = ______
1 × 10 = ______
54 + 10 = ______
72 + 20 = ______
36 − 10 = ______
7 × 10 = ______
20 + 20 = ______
89 + 10 = ______
6 × 10 = ______
