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 = ______
98 − 10 = ______
9 × 10 = ______
5 × 10 = ______
62 − 10 = ______
77 − 10 = ______
20 + 10 = ______
49 + 20 = ______
28 + 20 = ______
64 + 20 = ______
72 − 10 = ______
8 × 10 = ______
77 + 10 = ______
37 − 10 = ______
78 − 10 = ______
76 + 10 = ______
12 + 20 = ______
64 − 10 = ______
53 + 20 = ______
7 × 10 = ______
