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
97 − 10 = ______
43 + 20 = ______
35 + 20 = ______
63 + 20 = ______
81 − 10 = ______
62 − 10 = ______
23 − 10 = ______
41 + 10 = ______
1 × 10 = ______
4 × 10 = ______
65 + 10 = ______
24 + 10 = ______
5 × 10 = ______
7 × 10 = ______
36 + 20 = ______
89 + 20 = ______
31 + 20 = ______
79 + 20 = ______
41 − 10 = ______
91 − 10 = ______
