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
21 + 20 = ______
75 + 20 = ______
4 × 10 = ______
76 + 20 = ______
72 + 20 = ______
29 + 20 = ______
47 − 10 = ______
8 × 10 = ______
82 + 10 = ______
1 × 10 = ______
68 + 10 = ______
86 + 10 = ______
7 × 10 = ______
66 + 20 = ______
31 − 10 = ______
57 + 20 = ______
41 − 10 = ______
61 − 10 = ______
2 × 10 = ______
35 + 10 = ______
