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
2 × 10 = ______
9 × 10 = ______
24 + 20 = ______
55 − 10 = ______
7 × 10 = ______
72 + 10 = ______
83 + 20 = ______
37 + 10 = ______
53 + 10 = ______
81 + 20 = ______
4 × 10 = ______
14 + 10 = ______
82 + 20 = ______
87 − 10 = ______
27 − 10 = ______
41 + 20 = ______
3 × 10 = ______
26 − 10 = ______
29 − 10 = ______
47 + 10 = ______
