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
27 − 10 = ______
73 − 10 = ______
26 + 20 = ______
33 − 10 = ______
9 × 10 = ______
38 + 20 = ______
12 + 20 = ______
8 × 10 = ______
3 × 10 = ______
42 + 10 = ______
5 × 10 = ______
66 + 20 = ______
78 + 20 = ______
36 + 10 = ______
61 + 10 = ______
28 + 10 = ______
21 − 10 = ______
73 + 10 = ______
32 − 10 = ______
2 × 10 = ______
