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
31 − 10 = ______
11 + 10 = ______
83 − 10 = ______
89 − 10 = ______
2 × 10 = ______
44 − 10 = ______
5 × 10 = ______
8 × 10 = ______
66 + 10 = ______
26 + 20 = ______
7 × 10 = ______
15 + 10 = ______
48 − 10 = ______
78 + 10 = ______
84 + 20 = ______
55 + 20 = ______
33 + 10 = ______
39 + 20 = ______
41 − 10 = ______
72 − 10 = ______
