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
7 × 10 = ______
2 × 10 = ______
4 × 10 = ______
78 + 20 = ______
37 − 10 = ______
21 − 10 = ______
51 − 10 = ______
89 + 10 = ______
55 + 20 = ______
24 + 20 = ______
46 + 10 = ______
89 + 20 = ______
46 − 10 = ______
43 − 10 = ______
6 × 10 = ______
59 − 10 = ______
41 − 10 = ______
13 + 20 = ______
72 + 20 = ______
54 + 20 = ______
