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
45 + 20 = ______
18 + 10 = ______
31 + 20 = ______
43 + 20 = ______
23 − 10 = ______
62 − 10 = ______
2 × 10 = ______
36 + 20 = ______
52 + 10 = ______
7 × 10 = ______
9 × 10 = ______
48 − 10 = ______
64 − 10 = ______
49 + 10 = ______
48 + 20 = ______
97 − 10 = ______
73 + 10 = ______
3 × 10 = ______
66 − 10 = ______
8 × 10 = ______
