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
56 + 20 = ______
36 + 10 = ______
18 + 10 = ______
2 × 10 = ______
41 + 20 = ______
6 × 10 = ______
3 × 10 = ______
29 − 10 = ______
67 − 10 = ______
98 − 10 = ______
34 + 10 = ______
1 × 10 = ______
86 − 10 = ______
43 + 10 = ______
46 − 10 = ______
80 − 10 = ______
58 − 10 = ______
77 + 10 = ______
29 + 10 = ______
81 + 20 = ______
