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
44 + 20 = ______
44 + 10 = ______
75 + 20 = ______
74 + 20 = ______
97 − 10 = ______
22 + 10 = ______
27 + 10 = ______
3 × 10 = ______
39 + 20 = ______
2 × 10 = ______
54 − 10 = ______
31 + 10 = ______
72 + 10 = ______
29 − 10 = ______
53 − 10 = ______
32 − 10 = ______
30 + 10 = ______
43 + 10 = ______
51 − 10 = ______
32 + 20 = ______
