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
64 − 10 = ______
30 − 10 = ______
51 + 20 = ______
20 + 10 = ______
3 × 10 = ______
41 + 10 = ______
67 − 10 = ______
82 + 10 = ______
11 + 10 = ______
18 + 10 = ______
49 − 10 = ______
9 × 10 = ______
36 + 10 = ______
2 × 10 = ______
73 + 20 = ______
85 − 10 = ______
70 − 10 = ______
11 + 20 = ______
39 + 20 = ______
28 + 10 = ______
