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
87 + 20 = ______
44 + 20 = ______
21 − 10 = ______
15 + 10 = ______
40 + 10 = ______
37 − 10 = ______
47 − 10 = ______
2 × 10 = ______
53 + 10 = ______
6 × 10 = ______
8 × 10 = ______
7 × 10 = ______
60 − 10 = ______
53 + 20 = ______
62 + 20 = ______
50 + 20 = ______
9 × 10 = ______
23 + 10 = ______
36 − 10 = ______
85 + 10 = ______
