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
27 + 10 = ______
84 − 10 = ______
9 × 10 = ______
38 + 10 = ______
1 × 10 = ______
89 + 10 = ______
33 + 20 = ______
48 + 20 = ______
67 + 10 = ______
65 − 10 = ______
40 + 10 = ______
28 − 10 = ______
7 × 10 = ______
77 + 20 = ______
11 + 10 = ______
46 − 10 = ______
48 + 10 = ______
54 − 10 = ______
4 × 10 = ______
68 + 20 = ______
