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
22 + 20 = ______
66 + 20 = ______
27 − 10 = ______
48 + 10 = ______
2 × 10 = ______
55 − 10 = ______
24 − 10 = ______
82 + 10 = ______
5 × 10 = ______
84 + 20 = ______
43 − 10 = ______
32 + 20 = ______
17 + 10 = ______
37 + 20 = ______
99 − 10 = ______
8 × 10 = ______
91 − 10 = ______
13 + 10 = ______
81 + 20 = ______
64 + 10 = ______
