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
21 + 20 = ______
11 + 10 = ______
8 × 10 = ______
4 × 10 = ______
52 + 20 = ______
40 − 10 = ______
71 − 10 = ______
17 + 10 = ______
9 × 10 = ______
24 − 10 = ______
53 + 10 = ______
44 + 10 = ______
1 × 10 = ______
93 − 10 = ______
63 + 10 = ______
60 + 10 = ______
85 − 10 = ______
67 + 20 = ______
59 + 20 = ______
5 × 10 = ______
