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
80 + 10 = ______
66 + 20 = ______
36 − 10 = ______
29 − 10 = ______
74 + 20 = ______
5 × 10 = ______
64 + 20 = ______
81 − 10 = ______
83 + 10 = ______
23 − 10 = ______
7 × 10 = ______
45 + 10 = ______
27 − 10 = ______
51 + 20 = ______
49 + 10 = ______
51 + 10 = ______
23 + 10 = ______
21 + 10 = ______
47 + 10 = ______
28 − 10 = ______
