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
3 × 10 = ______
88 − 10 = ______
34 − 10 = ______
1 × 10 = ______
39 + 20 = ______
49 − 10 = ______
40 + 20 = ______
23 + 20 = ______
45 + 10 = ______
9 × 10 = ______
72 + 10 = ______
80 + 10 = ______
4 × 10 = ______
55 − 10 = ______
61 + 20 = ______
83 + 20 = ______
87 + 20 = ______
36 + 10 = ______
7 × 10 = ______
48 + 10 = ______
