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
1 × 10 = ______
11 + 20 = ______
9 × 10 = ______
81 − 10 = ______
2 × 10 = ______
33 − 10 = ______
32 + 10 = ______
20 + 20 = ______
88 + 20 = ______
7 × 10 = ______
53 + 20 = ______
23 − 10 = ______
72 − 10 = ______
80 + 10 = ______
60 + 10 = ______
36 + 20 = ______
98 − 10 = ______
30 − 10 = ______
91 − 10 = ______
64 + 20 = ______
