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
4 × 10 = ______
80 − 10 = ______
70 − 10 = ______
1 × 10 = ______
76 + 20 = ______
2 × 10 = ______
44 + 20 = ______
25 + 20 = ______
33 − 10 = ______
7 × 10 = ______
23 − 10 = ______
5 × 10 = ______
47 + 20 = ______
68 + 10 = ______
26 + 10 = ______
79 + 10 = ______
12 + 10 = ______
15 + 20 = ______
15 + 10 = ______
84 + 10 = ______
