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
30 + 10 = ______
61 + 10 = ______
70 + 20 = ______
81 − 10 = ______
54 + 20 = ______
47 − 10 = ______
68 + 10 = ______
9 × 10 = ______
41 − 10 = ______
3 × 10 = ______
14 + 20 = ______
77 + 10 = ______
53 − 10 = ______
8 × 10 = ______
6 × 10 = ______
59 + 10 = ______
76 − 10 = ______
79 + 10 = ______
46 + 10 = ______
84 + 20 = ______
