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
83 − 10 = ______
74 − 10 = ______
33 − 10 = ______
4 × 10 = ______
78 + 10 = ______
71 + 20 = ______
86 + 10 = ______
54 + 20 = ______
34 − 10 = ______
63 − 10 = ______
48 + 10 = ______
82 + 20 = ______
69 + 20 = ______
51 + 10 = ______
57 + 20 = ______
75 + 10 = ______
67 − 10 = ______
72 + 10 = ______
65 − 10 = ______
7 × 10 = ______
