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
54 + 20 = ______
85 + 20 = ______
19 + 10 = ______
1 × 10 = ______
3 × 10 = ______
70 + 10 = ______
91 − 10 = ______
99 − 10 = ______
8 × 10 = ______
67 + 10 = ______
15 + 20 = ______
55 + 10 = ______
53 + 10 = ______
85 + 10 = ______
27 + 20 = ______
76 − 10 = ______
79 − 10 = ______
65 − 10 = ______
39 + 10 = ______
81 − 10 = ______
