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
30 + 20 = ______
11 + 20 = ______
87 + 10 = ______
97 − 10 = ______
59 + 10 = ______
4 × 10 = ______
3 × 10 = ______
47 + 10 = ______
20 + 10 = ______
2 × 10 = ______
74 + 10 = ______
49 − 10 = ______
41 + 20 = ______
25 − 10 = ______
7 × 10 = ______
93 − 10 = ______
42 − 10 = ______
91 − 10 = ______
35 + 10 = ______
19 + 10 = ______
