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
6 × 10 = ______
69 + 20 = ______
85 + 20 = ______
46 − 10 = ______
58 + 20 = ______
3 × 10 = ______
2 × 10 = ______
71 − 10 = ______
73 − 10 = ______
24 + 20 = ______
26 − 10 = ______
61 + 10 = ______
51 + 20 = ______
63 − 10 = ______
81 − 10 = ______
46 + 10 = ______
59 − 10 = ______
85 + 10 = ______
56 − 10 = ______
8 × 10 = ______
