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 = ______
77 + 20 = ______
80 − 10 = ______
82 + 20 = ______
4 × 10 = ______
7 × 10 = ______
40 − 10 = ______
91 − 10 = ______
48 − 10 = ______
24 + 20 = ______
6 × 10 = ______
46 + 20 = ______
88 + 20 = ______
3 × 10 = ______
63 − 10 = ______
2 × 10 = ______
76 + 10 = ______
30 + 10 = ______
32 − 10 = ______
68 + 20 = ______
