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
74 + 20 = ______
65 + 10 = ______
2 × 10 = ______
3 × 10 = ______
1 × 10 = ______
73 + 20 = ______
71 + 10 = ______
51 + 20 = ______
6 × 10 = ______
74 − 10 = ______
83 + 20 = ______
59 + 20 = ______
23 − 10 = ______
62 + 20 = ______
62 + 10 = ______
75 − 10 = ______
53 + 20 = ______
97 − 10 = ______
70 − 10 = ______
27 + 10 = ______
