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
68 − 10 = ______
5 × 10 = ______
6 × 10 = ______
80 + 10 = ______
1 × 10 = ______
13 + 10 = ______
30 + 10 = ______
51 + 10 = ______
40 − 10 = ______
9 × 10 = ______
8 × 10 = ______
62 + 20 = ______
38 − 10 = ______
87 − 10 = ______
13 + 20 = ______
86 − 10 = ______
39 − 10 = ______
12 + 10 = ______
20 + 20 = ______
79 + 20 = ______
