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
49 + 20 = ______
6 × 10 = ______
67 + 20 = ______
78 + 20 = ______
72 − 10 = ______
86 + 20 = ______
50 + 10 = ______
15 + 10 = ______
1 × 10 = ______
7 × 10 = ______
20 + 10 = ______
27 − 10 = ______
8 × 10 = ______
63 − 10 = ______
74 − 10 = ______
44 − 10 = ______
36 + 20 = ______
58 + 10 = ______
54 + 10 = ______
52 − 10 = ______
