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
74 + 10 = ______
3 × 10 = ______
68 − 10 = ______
79 + 20 = ______
12 + 10 = ______
56 + 10 = ______
76 − 10 = ______
63 + 20 = ______
55 + 20 = ______
99 − 10 = ______
21 + 10 = ______
47 + 10 = ______
4 × 10 = ______
6 × 10 = ______
28 − 10 = ______
33 − 10 = ______
41 + 20 = ______
23 + 20 = ______
68 + 10 = ______
54 − 10 = ______
