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
73 + 20 = ______
4 × 10 = ______
83 + 20 = ______
70 + 10 = ______
9 × 10 = ______
78 − 10 = ______
44 + 10 = ______
8 × 10 = ______
1 × 10 = ______
23 − 10 = ______
24 − 10 = ______
11 + 10 = ______
6 × 10 = ______
3 × 10 = ______
46 − 10 = ______
14 + 10 = ______
75 + 10 = ______
84 − 10 = ______
32 + 10 = ______
57 + 20 = ______
