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
36 + 20 = ______
70 + 10 = ______
78 + 20 = ______
2 × 10 = ______
9 × 10 = ______
13 + 10 = ______
26 − 10 = ______
51 + 10 = ______
33 − 10 = ______
3 × 10 = ______
6 × 10 = ______
79 − 10 = ______
68 + 10 = ______
48 + 20 = ______
32 + 10 = ______
38 + 10 = ______
28 − 10 = ______
53 + 20 = ______
66 + 10 = ______
48 − 10 = ______
