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 = ______
5 × 10 = ______
66 − 10 = ______
94 − 10 = ______
2 × 10 = ______
52 − 10 = ______
75 + 20 = ______
42 + 10 = ______
35 − 10 = ______
42 + 20 = ______
25 + 20 = ______
46 + 10 = ______
73 − 10 = ______
28 + 10 = ______
55 + 20 = ______
71 + 10 = ______
6 × 10 = ______
51 + 20 = ______
8 × 10 = ______
32 + 10 = ______
