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
8 × 10 = ______
52 − 10 = ______
68 − 10 = ______
42 − 10 = ______
36 − 10 = ______
31 + 10 = ______
21 + 10 = ______
80 + 10 = ______
30 − 10 = ______
2 × 10 = ______
41 + 10 = ______
40 + 20 = ______
13 + 20 = ______
39 + 10 = ______
55 − 10 = ______
40 + 10 = ______
84 − 10 = ______
72 − 10 = ______
25 + 20 = ______
4 × 10 = ______
