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
54 + 20 = ______
1 × 10 = ______
9 × 10 = ______
50 + 10 = ______
6 × 10 = ______
40 + 20 = ______
4 × 10 = ______
46 − 10 = ______
59 + 10 = ______
29 + 20 = ______
59 + 20 = ______
8 × 10 = ______
21 + 10 = ______
80 − 10 = ______
28 + 20 = ______
54 − 10 = ______
38 − 10 = ______
89 + 10 = ______
48 + 20 = ______
88 − 10 = ______
