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 = ______
31 + 20 = ______
24 − 10 = ______
5 × 10 = ______
75 + 20 = ______
55 − 10 = ______
96 − 10 = ______
6 × 10 = ______
49 + 10 = ______
7 × 10 = ______
21 + 10 = ______
63 + 20 = ______
13 + 10 = ______
4 × 10 = ______
86 − 10 = ______
50 + 10 = ______
54 + 20 = ______
8 × 10 = ______
35 − 10 = ______
56 + 20 = ______
