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
91 − 10 = ______
99 − 10 = ______
36 + 10 = ______
49 + 10 = ______
20 + 10 = ______
28 + 20 = ______
40 + 10 = ______
23 + 20 = ______
72 − 10 = ______
43 − 10 = ______
8 × 10 = ______
83 + 10 = ______
28 + 10 = ______
74 − 10 = ______
47 + 20 = ______
12 + 10 = ______
5 × 10 = ______
4 × 10 = ______
57 − 10 = ______
63 + 10 = ______
