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 = ______
65 + 10 = ______
52 + 20 = ______
22 − 10 = ______
51 + 10 = ______
97 − 10 = ______
63 + 20 = ______
65 − 10 = ______
27 − 10 = ______
59 − 10 = ______
12 + 10 = ______
57 + 10 = ______
53 + 20 = ______
2 × 10 = ______
50 + 10 = ______
44 − 10 = ______
79 + 20 = ______
61 + 20 = ______
62 − 10 = ______
86 + 10 = ______
