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
56 + 20 = ______
32 + 10 = ______
62 + 20 = ______
73 + 20 = ______
77 − 10 = ______
34 + 10 = ______
7 × 10 = ______
44 − 10 = ______
84 + 20 = ______
35 + 20 = ______
50 + 10 = ______
8 × 10 = ______
37 − 10 = ______
42 + 10 = ______
31 + 20 = ______
58 − 10 = ______
71 + 20 = ______
92 − 10 = ______
61 + 20 = ______
52 − 10 = ______
