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
33 − 10 = ______
43 − 10 = ______
91 − 10 = ______
58 + 20 = ______
28 + 20 = ______
6 × 10 = ______
9 × 10 = ______
41 − 10 = ______
14 + 10 = ______
42 − 10 = ______
32 − 10 = ______
46 + 10 = ______
32 + 20 = ______
33 + 10 = ______
74 + 10 = ______
30 + 20 = ______
70 + 20 = ______
31 + 10 = ______
34 − 10 = ______
82 + 10 = ______
