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
11 + 10 = ______
56 + 20 = ______
40 − 10 = ______
86 − 10 = ______
68 − 10 = ______
47 + 10 = ______
92 − 10 = ______
71 + 20 = ______
2 × 10 = ______
3 × 10 = ______
6 × 10 = ______
8 × 10 = ______
15 + 20 = ______
25 + 20 = ______
85 + 10 = ______
89 − 10 = ______
64 + 10 = ______
32 + 20 = ______
23 − 10 = ______
40 + 10 = ______
