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
14 + 20 = ______
8 × 10 = ______
25 − 10 = ______
5 × 10 = ______
23 − 10 = ______
68 − 10 = ______
64 − 10 = ______
51 + 10 = ______
77 − 10 = ______
28 − 10 = ______
59 + 10 = ______
86 + 20 = ______
74 + 20 = ______
23 + 10 = ______
80 − 10 = ______
1 × 10 = ______
73 + 10 = ______
32 − 10 = ______
2 × 10 = ______
44 − 10 = ______
