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
30 + 10 = ______
13 + 20 = ______
66 + 20 = ______
6 × 10 = ______
97 − 10 = ______
50 + 10 = ______
4 × 10 = ______
68 + 10 = ______
83 − 10 = ______
63 + 20 = ______
3 × 10 = ______
82 − 10 = ______
75 − 10 = ______
71 + 10 = ______
8 × 10 = ______
78 + 10 = ______
2 × 10 = ______
41 + 20 = ______
58 + 10 = ______
7 × 10 = ______
