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
77 − 10 = ______
86 + 10 = ______
46 − 10 = ______
8 × 10 = ______
22 − 10 = ______
3 × 10 = ______
78 + 10 = ______
9 × 10 = ______
15 + 20 = ______
76 + 20 = ______
50 + 20 = ______
71 + 20 = ______
27 + 20 = ______
6 × 10 = ______
2 × 10 = ______
48 − 10 = ______
73 − 10 = ______
62 + 20 = ______
29 − 10 = ______
39 − 10 = ______
