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
48 + 10 = ______
65 + 10 = ______
85 − 10 = ______
63 + 20 = ______
40 − 10 = ______
81 + 10 = ______
7 × 10 = ______
4 × 10 = ______
43 + 20 = ______
32 + 20 = ______
89 + 20 = ______
87 − 10 = ______
72 + 20 = ______
77 + 10 = ______
52 + 10 = ______
6 × 10 = ______
67 − 10 = ______
42 − 10 = ______
2 × 10 = ______
46 + 20 = ______
