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
51 + 20 = ______
7 × 10 = ______
15 + 10 = ______
5 × 10 = ______
49 + 20 = ______
24 − 10 = ______
64 + 20 = ______
76 − 10 = ______
6 × 10 = ______
25 + 10 = ______
1 × 10 = ______
99 − 10 = ______
11 + 10 = ______
74 + 20 = ______
31 + 10 = ______
60 − 10 = ______
54 − 10 = ______
40 + 20 = ______
80 + 20 = ______
22 + 20 = ______
