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
4 × 10 = ______
59 + 10 = ______
69 − 10 = ______
7 × 10 = ______
82 + 20 = ______
89 + 10 = ______
42 + 20 = ______
99 − 10 = ______
12 + 20 = ______
63 − 10 = ______
55 + 20 = ______
9 × 10 = ______
23 + 20 = ______
61 − 10 = ______
88 + 10 = ______
29 − 10 = ______
2 × 10 = ______
20 + 20 = ______
79 + 20 = ______
47 + 10 = ______
