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
87 + 20 = ______
2 × 10 = ______
81 + 10 = ______
58 − 10 = ______
55 + 10 = ______
64 + 10 = ______
91 − 10 = ______
75 + 10 = ______
64 + 20 = ______
88 + 20 = ______
70 + 20 = ______
32 − 10 = ______
8 × 10 = ______
74 − 10 = ______
80 + 10 = ______
1 × 10 = ______
66 − 10 = ______
89 − 10 = ______
46 + 20 = ______
4 × 10 = ______
