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
44 − 10 = ______
78 − 10 = ______
56 − 10 = ______
27 + 20 = ______
60 + 10 = ______
12 + 10 = ______
63 + 10 = ______
39 + 20 = ______
3 × 10 = ______
17 + 20 = ______
2 × 10 = ______
77 − 10 = ______
6 × 10 = ______
8 × 10 = ______
28 − 10 = ______
29 + 20 = ______
42 + 20 = ______
49 + 10 = ______
23 + 10 = ______
79 + 10 = ______
