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
61 + 10 = ______
46 − 10 = ______
74 + 20 = ______
42 + 20 = ______
56 − 10 = ______
34 + 20 = ______
3 × 10 = ______
8 × 10 = ______
97 − 10 = ______
81 − 10 = ______
32 + 10 = ______
67 + 10 = ______
38 − 10 = ______
68 + 20 = ______
36 − 10 = ______
93 − 10 = ______
31 + 20 = ______
68 + 10 = ______
13 + 20 = ______
6 × 10 = ______
