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
78 + 10 = ______
37 + 20 = ______
32 − 10 = ______
52 + 20 = ______
64 + 10 = ______
23 − 10 = ______
78 − 10 = ______
42 − 10 = ______
1 × 10 = ______
87 + 20 = ______
49 + 20 = ______
27 + 20 = ______
9 × 10 = ______
94 − 10 = ______
25 + 20 = ______
34 − 10 = ______
2 × 10 = ______
67 + 20 = ______
66 + 20 = ______
84 + 10 = ______
