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 + 20 = ______
76 + 10 = ______
66 + 10 = ______
64 − 10 = ______
71 + 10 = ______
87 + 10 = ______
68 + 20 = ______
68 − 10 = ______
28 − 10 = ______
33 + 10 = ______
2 × 10 = ______
57 + 20 = ______
4 × 10 = ______
6 × 10 = ______
84 + 20 = ______
59 − 10 = ______
58 − 10 = ______
95 − 10 = ______
55 + 10 = ______
66 + 20 = ______
