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
28 + 20 = ______
44 + 20 = ______
97 − 10 = ______
47 − 10 = ______
66 + 20 = ______
13 + 20 = ______
47 + 20 = ______
8 × 10 = ______
27 + 20 = ______
76 + 20 = ______
42 + 10 = ______
75 − 10 = ______
91 − 10 = ______
82 − 10 = ______
23 + 20 = ______
88 + 10 = ______
4 × 10 = ______
5 × 10 = ______
59 − 10 = ______
35 − 10 = ______
