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
2 × 10 = ______
78 + 20 = ______
14 + 10 = ______
47 − 10 = ______
13 + 20 = ______
29 − 10 = ______
28 + 10 = ______
76 − 10 = ______
51 + 20 = ______
71 + 20 = ______
9 × 10 = ______
65 + 10 = ______
8 × 10 = ______
66 + 20 = ______
5 × 10 = ______
82 − 10 = ______
51 + 10 = ______
21 + 10 = ______
85 − 10 = ______
51 − 10 = ______
