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
61 − 10 = ______
58 + 10 = ______
25 + 20 = ______
3 × 10 = ______
18 + 10 = ______
67 + 10 = ______
88 + 10 = ______
19 + 10 = ______
2 × 10 = ______
21 − 10 = ______
42 − 10 = ______
90 − 10 = ______
35 − 10 = ______
9 × 10 = ______
8 × 10 = ______
63 − 10 = ______
47 − 10 = ______
28 + 20 = ______
23 − 10 = ______
12 + 20 = ______
