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
55 − 10 = ______
59 + 10 = ______
60 + 20 = ______
28 − 10 = ______
55 + 20 = ______
36 − 10 = ______
1 × 10 = ______
31 + 20 = ______
94 − 10 = ______
61 − 10 = ______
2 × 10 = ______
7 × 10 = ______
79 − 10 = ______
75 + 20 = ______
66 − 10 = ______
5 × 10 = ______
56 − 10 = ______
54 − 10 = ______
15 + 20 = ______
6 × 10 = ______
