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
18 + 20 = ______
31 − 10 = ______
1 × 10 = ______
5 × 10 = ______
75 + 10 = ______
6 × 10 = ______
73 − 10 = ______
62 + 20 = ______
19 + 10 = ______
48 − 10 = ______
87 + 10 = ______
81 − 10 = ______
12 + 10 = ______
88 + 10 = ______
66 + 20 = ______
65 − 10 = ______
7 × 10 = ______
30 + 20 = ______
32 − 10 = ______
46 − 10 = ______
