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
58 + 20 = ______
72 + 10 = ______
51 + 10 = ______
64 + 10 = ______
31 + 10 = ______
66 + 20 = ______
57 + 20 = ______
1 × 10 = ______
8 × 10 = ______
9 × 10 = ______
67 − 10 = ______
5 × 10 = ______
47 − 10 = ______
53 + 20 = ______
87 + 20 = ______
73 − 10 = ______
31 − 10 = ______
6 × 10 = ______
89 + 20 = ______
32 + 10 = ______
