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
33 + 20 = ______
1 × 10 = ______
15 + 10 = ______
28 − 10 = ______
71 + 20 = ______
49 + 20 = ______
47 + 10 = ______
59 − 10 = ______
32 + 10 = ______
86 − 10 = ______
38 + 10 = ______
40 − 10 = ______
85 − 10 = ______
5 × 10 = ______
61 − 10 = ______
64 + 20 = ______
82 + 20 = ______
76 + 10 = ______
63 + 20 = ______
2 × 10 = ______
