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
80 + 10 = ______
27 − 10 = ______
71 + 10 = ______
2 × 10 = ______
29 + 10 = ______
86 − 10 = ______
70 − 10 = ______
4 × 10 = ______
1 × 10 = ______
79 + 20 = ______
77 + 20 = ______
49 + 20 = ______
82 + 20 = ______
86 + 10 = ______
22 + 10 = ______
71 − 10 = ______
89 + 20 = ______
40 + 20 = ______
5 × 10 = ______
26 − 10 = ______
