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
57 + 20 = ______
41 − 10 = ______
9 × 10 = ______
67 − 10 = ______
59 + 20 = ______
42 + 10 = ______
34 + 10 = ______
5 × 10 = ______
32 − 10 = ______
63 + 10 = ______
26 − 10 = ______
96 − 10 = ______
27 + 20 = ______
2 × 10 = ______
22 − 10 = ______
7 × 10 = ______
4 × 10 = ______
72 − 10 = ______
82 − 10 = ______
78 + 10 = ______
