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
9 × 10 = ______
82 − 10 = ______
50 + 20 = ______
91 − 10 = ______
57 + 20 = ______
85 + 10 = ______
54 − 10 = ______
7 × 10 = ______
89 + 20 = ______
1 × 10 = ______
41 + 10 = ______
8 × 10 = ______
6 × 10 = ______
2 × 10 = ______
93 − 10 = ______
29 + 10 = ______
48 + 10 = ______
26 + 20 = ______
27 − 10 = ______
77 + 20 = ______
