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
49 − 10 = ______
54 − 10 = ______
63 − 10 = ______
82 − 10 = ______
28 + 10 = ______
83 + 20 = ______
91 − 10 = ______
2 × 10 = ______
18 + 10 = ______
43 + 10 = ______
20 + 10 = ______
4 × 10 = ______
7 × 10 = ______
26 − 10 = ______
9 × 10 = ______
28 + 20 = ______
58 + 20 = ______
14 + 10 = ______
89 − 10 = ______
33 + 10 = ______
