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
79 − 10 = ______
33 + 20 = ______
97 − 10 = ______
85 − 10 = ______
5 × 10 = ______
72 + 10 = ______
67 − 10 = ______
4 × 10 = ______
21 − 10 = ______
12 + 20 = ______
81 + 20 = ______
59 − 10 = ______
82 − 10 = ______
8 × 10 = ______
43 + 20 = ______
74 + 20 = ______
73 + 20 = ______
49 + 20 = ______
65 + 20 = ______
1 × 10 = ______
