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
51 + 20 = ______
6 × 10 = ______
9 × 10 = ______
63 − 10 = ______
2 × 10 = ______
3 × 10 = ______
4 × 10 = ______
91 − 10 = ______
30 + 10 = ______
36 − 10 = ______
51 − 10 = ______
22 − 10 = ______
26 + 10 = ______
71 − 10 = ______
83 + 10 = ______
7 × 10 = ______
46 + 20 = ______
39 + 20 = ______
76 + 20 = ______
46 − 10 = ______
