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 = ______
91 − 10 = ______
32 + 10 = ______
20 + 20 = ______
3 × 10 = ______
64 − 10 = ______
74 + 10 = ______
12 + 20 = ______
6 × 10 = ______
21 + 10 = ______
7 × 10 = ______
41 + 10 = ______
16 + 10 = ______
59 − 10 = ______
81 − 10 = ______
9 × 10 = ______
36 + 10 = ______
73 + 10 = ______
57 + 20 = ______
83 − 10 = ______
