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
8 × 10 = ______
4 × 10 = ______
5 × 10 = ______
20 + 10 = ______
77 + 10 = ______
73 + 10 = ______
91 − 10 = ______
51 + 20 = ______
60 + 10 = ______
83 + 20 = ______
81 − 10 = ______
7 × 10 = ______
72 + 20 = ______
34 − 10 = ______
2 × 10 = ______
83 − 10 = ______
25 + 20 = ______
74 + 20 = ______
75 + 10 = ______
61 − 10 = ______
