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
84 + 20 = ______
1 × 10 = ______
51 + 20 = ______
63 + 20 = ______
54 + 20 = ______
23 + 20 = ______
26 − 10 = ______
82 − 10 = ______
94 − 10 = ______
41 + 20 = ______
88 − 10 = ______
68 + 20 = ______
19 + 10 = ______
91 − 10 = ______
43 − 10 = ______
55 − 10 = ______
2 × 10 = ______
27 + 10 = ______
82 + 20 = ______
43 + 20 = ______
