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
2 × 10 = ______
48 − 10 = ______
99 − 10 = ______
1 × 10 = ______
74 + 20 = ______
26 + 20 = ______
9 × 10 = ______
56 + 10 = ______
77 + 10 = ______
50 + 10 = ______
3 × 10 = ______
80 + 10 = ______
72 + 10 = ______
35 + 10 = ______
96 − 10 = ______
50 − 10 = ______
46 − 10 = ______
31 + 10 = ______
63 + 20 = ______
42 + 20 = ______
