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
9 × 10 = ______
6 × 10 = ______
83 + 10 = ______
57 + 20 = ______
58 + 10 = ______
77 − 10 = ______
71 + 10 = ______
47 − 10 = ______
4 × 10 = ______
99 − 10 = ______
74 − 10 = ______
30 + 20 = ______
15 + 10 = ______
12 + 10 = ______
7 × 10 = ______
95 − 10 = ______
87 − 10 = ______
78 + 20 = ______
63 + 10 = ______
36 + 20 = ______
