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
89 + 20 = ______
45 − 10 = ______
43 − 10 = ______
65 + 10 = ______
21 − 10 = ______
74 + 20 = ______
62 − 10 = ______
23 + 20 = ______
59 − 10 = ______
65 − 10 = ______
40 + 10 = ______
73 + 20 = ______
1 × 10 = ______
69 − 10 = ______
52 + 20 = ______
8 × 10 = ______
5 × 10 = ______
79 + 10 = ______
70 + 10 = ______
84 − 10 = ______
