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
55 − 10 = ______
42 − 10 = ______
8 × 10 = ______
47 − 10 = ______
79 + 10 = ______
23 + 20 = ______
42 + 10 = ______
38 + 20 = ______
65 + 20 = ______
76 + 20 = ______
37 + 20 = ______
9 × 10 = ______
45 + 20 = ______
12 + 10 = ______
83 − 10 = ______
87 − 10 = ______
69 − 10 = ______
89 − 10 = ______
47 + 10 = ______
97 − 10 = ______
