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
87 − 10 = ______
5 × 10 = ______
41 + 10 = ______
24 − 10 = ______
98 − 10 = ______
14 + 20 = ______
51 + 20 = ______
8 × 10 = ______
18 + 10 = ______
2 × 10 = ______
35 + 20 = ______
81 − 10 = ______
4 × 10 = ______
64 + 10 = ______
72 + 20 = ______
63 − 10 = ______
49 − 10 = ______
29 + 10 = ______
82 + 20 = ______
50 + 10 = ______
